156856394602 has 8 divisors (see below), whose sum is σ = 241023240612. Its totient is φ = 76515314400.

The previous prime is 156856394593. The next prime is 156856394621. The reversal of 156856394602 is 206493658651.

It is a Cunningham number, because it is equal to 396051²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 156856394601 + 1 = 396051^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 956441349 + ... + 956441512.

Almost surely, 2^156856394602 is an apocalyptic number.

156856394602 is a deficient number, since it is larger than the sum of its proper divisors (84166846010).

156856394602 is a wasteful number, since it uses less digits than its factorization.

156856394602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912882904.

The product of its (nonzero) digits is 9331200, while the sum is 55.

The spelling of 156856394602 in words is "one hundred fifty-six billion, eight hundred fifty-six million, three hundred ninety-four thousand, six hundred two".