156728992684 has 24 divisors (see below), whose sum is σ = 299222155008. Its totient is φ = 71237532240.

The previous prime is 156728992663. The next prime is 156728992733. The reversal of 156728992684 is 486299827651.

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, 1305769 + ... + 1420735.

It is an arithmetic number, because the mean of its divisors is an integer number (12467589792).

Almost surely, 2^156728992684 is an apocalyptic number.

It is an amenable number.

156728992684 is a deficient number, since it is larger than the sum of its proper divisors (142493162324).

156728992684 is a wasteful number, since it uses less digits than its factorization.

156728992684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145965 (or 145963 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 67.

The spelling of 156728992684 in words is "one hundred fifty-six billion, seven hundred twenty-eight million, nine hundred ninety-two thousand, six hundred eighty-four".