20230645112557 has 16 divisors (see below), whose sum is σ = 22286410578432. Its totient is φ = 18211019897520.

The previous prime is 20230645112521. The next prime is 20230645112569. The reversal of 20230645112557 is 75521154603202.

It is a cyclic number.

It is not a de Polignac number, because 20230645112557 - 2²³ = 20230636723949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20230645112057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9881598 + ... + 11751904.

It is an arithmetic number, because the mean of its divisors is an integer number (1392900661152).

Almost surely, 2^{20230645112557} is an apocalyptic number.

It is an amenable number.

20230645112557 is a deficient number, since it is larger than the sum of its proper divisors (2055765465875).

20230645112557 is a wasteful number, since it uses less digits than its factorization.

20230645112557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879968.

The product of its (nonzero) digits is 504000, while the sum is 43.

Adding to 20230645112557 its reverse (75521154603202), we get a palindrome (95751799715759).

The spelling of 20230645112557 in words is "twenty trillion, two hundred thirty billion, six hundred forty-five million, one hundred twelve thousand, five hundred fifty-seven".