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7157887377108 = 2231397453470831
BaseRepresentation
bin110100000101001001101…
…0101011001111011010100
3221100021202110220202120220
41220022103111121323110
51414233323132031413
623120142115554340
71336066056554046
oct150122325317324
927307673822526
107157887377108
11230a708900676
129772b5bbb9b0
133cbca7ca7a20
141aa62d335a96
15c62d697e223
hex68293559ed4

7157887377108 has 48 divisors (see below), whose sum is σ = 17986708997376. Its totient is φ = 2202399607680.

The previous prime is 7157887377107. The next prime is 7157887377133. The reversal of 7157887377108 is 8017737887517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7157887377103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14967253 + ... + 15438083.

It is an arithmetic number, because the mean of its divisors is an integer number (374723104112).

Almost surely, 27157887377108 is an apocalyptic number.

7157887377108 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

7157887377108 is an abundant number, since it is smaller than the sum of its proper divisors (10828821620268).

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

7157887377108 is a wasteful number, since it uses less digits than its factorization.

7157887377108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568304 (or 568302 counting only the distinct ones).

The product of its (nonzero) digits is 129077760, while the sum is 69.

The spelling of 7157887377108 in words is "seven trillion, one hundred fifty-seven billion, eight hundred eighty-seven million, three hundred seventy-seven thousand, one hundred eight".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 97453 194906 292359 389812 470831 584718 941662 1169436 1266889 1412493 1883324 2533778 2824986 3800667 5067556 5649972 6120803 7601334 12241606 15202668 18362409 24483212 36724818 73449636 45883893443 91767786886 137651680329 183535573772 275303360658 550606721316 596490614759 1192981229518 1789471844277 2385962459036 3578943688554 7157887377108