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78785106202012 = 227191091518997649
BaseRepresentation
bin10001111010011110010110…
…010001001100110110011100
3101022221210010111211120201211
4101322132112101030312130
540311303344141431022
6435321213402114204
722411015243200610
oct2172362621146634
9338853114746654
1078785106202012
11231156375891a1
128a050b87ab964
1334c6532a33bc2
1415653103ad340
159195ac415e77
hex47a79644cd9c

78785106202012 has 96 divisors (see below), whose sum is σ = 168493592960000. Its totient is φ = 31484569881600.

The previous prime is 78785106202009. The next prime is 78785106202037. The reversal of 78785106202012 is 21020260158787.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4257364 + ... + 13255012.

Almost surely, 278785106202012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78785106202012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84246796480000).

78785106202012 is an abundant number, since it is smaller than the sum of its proper divisors (89708486757988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78785106202012 is a wasteful number, since it uses less digits than its factorization.

78785106202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8997939 (or 8997937 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 49.

The spelling of 78785106202012 in words is "seventy-eight trillion, seven hundred eighty-five billion, one hundred six million, two hundred two thousand, twelve".

Divisors: 1 2 4 7 14 19 28 38 76 109 133 151 218 266 302 436 532 604 763 1057 1526 2071 2114 2869 3052 4142 4228 5738 8284 11476 14497 16459 20083 28994 32918 40166 57988 65836 80332 115213 230426 312721 460852 625442 1250884 2189047 4378094 8756188 8997649 17995298 35990596 62983543 125967086 170955331 251934172 341910662 683821324 980743741 1196687317 1358644999 1961487482 2393374634 2717289998 3922974964 4786749268 5434579996 6865206187 9510514993 13730412374 18634131079 19021029986 25814254981 27460824748 37268262158 38042059972 51628509962 74536524316 103257019924 130438917553 148092304891 180699784867 260877835106 296184609782 361399569734 521755670212 592369219564 722799139468 1036646134237 2073292268474 2813753792929 4146584536948 5627507585858 11255015171716 19696276550503 39392553101006 78785106202012