20350122660553 has 32 divisors (see below), whose sum is σ = 23802957063936. Its totient is φ = 17036785928448.

The previous prime is 20350122660499. The next prime is 20350122660557. The reversal of 20350122660553 is 35506622105302.

It is a cyclic number.

It is not a de Polignac number, because 20350122660553 - 2²⁵ = 20350089106121 is a prime.

It is a super-2 number, since 2×20350122660553² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20350122660557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115319175 + ... + 115495507.

It is an arithmetic number, because the mean of its divisors is an integer number (743842408248).

Almost surely, 2^{20350122660553} is an apocalyptic number.

It is an amenable number.

20350122660553 is a deficient number, since it is larger than the sum of its proper divisors (3452834403383).

20350122660553 is a wasteful number, since it uses less digits than its factorization.

20350122660553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177793.

The product of its (nonzero) digits is 324000, while the sum is 40.

Adding to 20350122660553 its reverse (35506622105302), we get a palindrome (55856744765855).

The spelling of 20350122660553 in words is "twenty trillion, three hundred fifty billion, one hundred twenty-two million, six hundred sixty thousand, five hundred fifty-three".