20730157166155 has 16 divisors (see below), whose sum is σ = 25034863998240. Its totient is φ = 16478629203712.

The previous prime is 20730157166123. The next prime is 20730157166161. The reversal of 20730157166155 is 55166175103702.

It is a cyclic number.

It is not a de Polignac number, because 20730157166155 - 2⁵ = 20730157166123 is a prime.

It is a super-2 number, since 2×20730157166155² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20730157166099 and 20730157166108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17363794 + ... + 18519223.

It is an arithmetic number, because the mean of its divisors is an integer number (1564678999890).

Almost surely, 2^{20730157166155} is an apocalyptic number.

20730157166155 is a deficient number, since it is larger than the sum of its proper divisors (4304706832085).

20730157166155 is a wasteful number, since it uses less digits than its factorization.

20730157166155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35883758.

The product of its (nonzero) digits is 1323000, while the sum is 49.

The spelling of 20730157166155 in words is "twenty trillion, seven hundred thirty billion, one hundred fifty-seven million, one hundred sixty-six thousand, one hundred fifty-five".