20730157166156 has 12 divisors (see below), whose sum is σ = 37049642595168. Its totient is φ = 10144544996112.

The previous prime is 20730157166123. The next prime is 20730157166161. The reversal of 20730157166156 is 65166175103702.

It is a super-2 number, since 2×20730157166156² (a number of 27 digits) contains 22 as substring.

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, 55133396531 + ... + 55133396906.

It is an arithmetic number, because the mean of its divisors is an integer number (3087470216264).

Almost surely, 2^{20730157166156} is an apocalyptic number.

It is an amenable number.

20730157166156 is a deficient number, since it is larger than the sum of its proper divisors (16319485429012).

20730157166156 is a wasteful number, since it uses less digits than its factorization.

20730157166156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110266793488 (or 110266793486 counting only the distinct ones).

The product of its (nonzero) digits is 1587600, while the sum is 50.

The spelling of 20730157166156 in words is "twenty trillion, seven hundred thirty billion, one hundred fifty-seven million, one hundred sixty-six thousand, one hundred fifty-six".