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12780066172832 = 257193002835097
BaseRepresentation
bin1011100111111001011101…
…0011011110111110100000
31200020202120210012111120222
42321332113103132332200
53133342033420012312
643103025323222212
72456220645044240
oct271762723367640
950222523174528
1012780066172832
114087aa51a7172
121524a42377968
137192028c014a
143227b6765b20
1517268b1b8672
hexb9f974defa0

12780066172832 has 48 divisors (see below), whose sum is σ = 30268577787840. Its totient is φ = 5188899045888.

The previous prime is 12780066172831. The next prime is 12780066172843. The reversal of 12780066172832 is 23827166008721.

It is not an unprimeable number, because it can be changed into a prime (12780066172831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1501413293 + ... + 1501421804.

It is an arithmetic number, because the mean of its divisors is an integer number (630595370580).

Almost surely, 212780066172832 is an apocalyptic number.

It is an amenable number.

12780066172832 is an abundant number, since it is smaller than the sum of its proper divisors (17488511615008).

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

12780066172832 is a wasteful number, since it uses less digits than its factorization.

12780066172832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3002835133 (or 3002835125 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 53.

The spelling of 12780066172832 in words is "twelve trillion, seven hundred eighty billion, sixty-six million, one hundred seventy-two thousand, eight hundred thirty-two".

Divisors: 1 2 4 7 8 14 16 19 28 32 38 56 76 112 133 152 224 266 304 532 608 1064 2128 4256 3002835097 6005670194 12011340388 21019845679 24022680776 42039691358 48045361552 57053866843 84079382716 96090723104 114107733686 168158765432 228215467372 336317530864 399377067901 456430934744 672635061728 798754135802 912861869488 1597508271604 1825723738976 3195016543208 6390033086416 12780066172832