156137640507 has 24 divisors (see below), whose sum is σ = 238387394960. Its totient is φ = 98204037120.

The previous prime is 156137640499. The next prime is 156137640521. The reversal of 156137640507 is 705046731651.

156137640507 is a `hidden beast` number, since 1 + 5 + 6 + 137 + 6 + 4 + 0 + 507 = 666.

It is not a de Polignac number, because 156137640507 - 2³ = 156137640499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156137640577) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1853158 + ... + 1935579.

Almost surely, 2^156137640507 is an apocalyptic number.

156137640507 is a deficient number, since it is larger than the sum of its proper divisors (82249754453).

156137640507 is a wasteful number, since it uses less digits than its factorization.

156137640507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3789003 (or 3789000 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 156137640507 in words is "one hundred fifty-six billion, one hundred thirty-seven million, six hundred forty thousand, five hundred seven".