156720481996 has 24 divisors (see below), whose sum is σ = 302226622544. Its totient is φ = 70650377280.

The previous prime is 156720481987. The next prime is 156720482003. The reversal of 156720481996 is 699184027651.

It is a super-2 number, since 2×156720481996² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 156720481996.

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, 35042595 + ... + 35047066.

Almost surely, 2^156720481996 is an apocalyptic number.

It is an amenable number.

156720481996 is a deficient number, since it is larger than the sum of its proper divisors (145506140548).

156720481996 is a wasteful number, since it uses less digits than its factorization.

156720481996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70089721 (or 70089719 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 156720481996 in words is "one hundred fifty-six billion, seven hundred twenty million, four hundred eighty-one thousand, nine hundred ninety-six".