20345025623121 has 40 divisors (see below), whose sum is σ = 30528442923264. Its totient is φ = 13502460162240.

The previous prime is 20345025623093. The next prime is 20345025623161. The reversal of 20345025623121 is 12132652054302.

20345025623121 is a `hidden beast` number, since 2 + 0 + 3 + 4 + 5 + 0 + 2 + 5 + 623 + 1 + 21 = 666.

It is not a de Polignac number, because 20345025623121 - 2²³ = 20345017234513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20345025623161) 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 39 ways as a sum of consecutive naturals, for example, 97412476 + ... + 97621106.

Almost surely, 2^{20345025623121} is an apocalyptic number.

It is an amenable number.

20345025623121 is a deficient number, since it is larger than the sum of its proper divisors (10183417300143).

20345025623121 is a wasteful number, since it uses less digits than its factorization.

20345025623121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214043 (or 214034 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 20345025623121 its reverse (12132652054302), we get a palindrome (32477677677423).

The spelling of 20345025623121 in words is "twenty trillion, three hundred forty-five billion, twenty-five million, six hundred twenty-three thousand, one hundred twenty-one".