157139087721660 has 216 divisors, whose sum is σ = 551501923649040. Its totient is φ = 36089359764480.

The previous prime is 157139087721589. The next prime is 157139087721697. The reversal of 157139087721660 is 66127780931751.

157139087721660 is a `hidden beast` number, since 1 + 5 + 7 + 1 + 390 + 87 + 7 + 2 + 166 + 0 = 666.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 189450237 + ... + 190277876.

Almost surely, 2^{157139087721660} is an apocalyptic number.

157139087721660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157139087721660 is an abundant number, since it is smaller than the sum of its proper divisors (394362835927380).

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

157139087721660 is a wasteful number, since it uses less digits than its factorization.

157139087721660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379728169 (or 379728153 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 63.

The spelling of 157139087721660 in words is "one hundred fifty-seven trillion, one hundred thirty-nine billion, eighty-seven million, seven hundred twenty-one thousand, six hundred sixty".