20730157166157 has 8 divisors (see below), whose sum is σ = 27642272772576. Its totient is φ = 13819073168592.

The previous prime is 20730157166123. The next prime is 20730157166161. The reversal of 20730157166157 is 75166175103702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20730157166157 - 2⁸ = 20730157165901 is a prime.

It is a super-2 number, since 2×20730157166157² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20730157966157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257855323 + ... + 257935704.

It is an arithmetic number, because the mean of its divisors is an integer number (3455284096572).

Almost surely, 2^{20730157166157} is an apocalyptic number.

It is an amenable number.

20730157166157 is a deficient number, since it is larger than the sum of its proper divisors (6912115606419).

20730157166157 is a wasteful number, since it uses less digits than its factorization.

20730157166157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515804427.

The product of its (nonzero) digits is 1852200, while the sum is 51.

The spelling of 20730157166157 in words is "twenty trillion, seven hundred thirty billion, one hundred fifty-seven million, one hundred sixty-six thousand, one hundred fifty-seven".