157656660626660 has 24 divisors (see below), whose sum is σ = 356546601725496. Its totient is φ = 58211690077440.

The previous prime is 157656660626617. The next prime is 157656660626677. The reversal of 157656660626660 is 66626066656751.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2967343869604 + 154689316757056 = 1722598^2 + 12437416^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303185885561 + ... + 303185886080.

It is an arithmetic number, because the mean of its divisors is an integer number (14856108405229).

Almost surely, 2^{157656660626660} is an apocalyptic number.

157656660626660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157656660626660 is an abundant number, since it is smaller than the sum of its proper divisors (198889941098836).

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

157656660626660 is a wasteful number, since it uses less digits than its factorization.

157656660626660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606371771663 (or 606371771661 counting only the distinct ones).

The product of its (nonzero) digits is 587865600, while the sum is 68.

The spelling of 157656660626660 in words is "one hundred fifty-seven trillion, six hundred fifty-six billion, six hundred sixty million, six hundred twenty-six thousand, six hundred sixty".