157686072715 has 32 divisors (see below), whose sum is σ = 208460229120. Its totient is φ = 113973640704.

The previous prime is 157686072701. The next prime is 157686072721. The reversal of 157686072715 is 517270686751.

It is a cyclic number.

It is not a de Polignac number, because 157686072715 - 2²⁷ = 157551854987 is a prime.

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, 629272 + ... + 843418.

It is an arithmetic number, because the mean of its divisors is an integer number (6514382160).

Almost surely, 2^157686072715 is an apocalyptic number.

157686072715 is a deficient number, since it is larger than the sum of its proper divisors (50774156405).

157686072715 is a wasteful number, since it uses less digits than its factorization.

157686072715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214531.

The product of its (nonzero) digits is 4939200, while the sum is 55.

The spelling of 157686072715 in words is "one hundred fifty-seven billion, six hundred eighty-six million, seventy-two thousand, seven hundred fifteen".