157990722928 has 20 divisors (see below), whose sum is σ = 306672859528. Its totient is φ = 78849339840.

The previous prime is 157990722913. The next prime is 157990722949. The reversal of 157990722928 is 829227099751.

157990722928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×157990722928² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9117426 + ... + 9134737.

Almost surely, 2^157990722928 is an apocalyptic number.

It is an amenable number.

157990722928 is a deficient number, since it is larger than the sum of its proper divisors (148682136600).

157990722928 is a wasteful number, since it uses less digits than its factorization.

157990722928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18252712 (or 18252706 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 61.

The spelling of 157990722928 in words is "one hundred fifty-seven billion, nine hundred ninety million, seven hundred twenty-two thousand, nine hundred twenty-eight".