51202020564136 has 32 divisors (see below), whose sum is σ = 104697413049600. Its totient is φ = 23332566329280.

The previous prime is 51202020564133. The next prime is 51202020564157. The reversal of 51202020564136 is 63146502020215.

It is a junction number, because it is equal to n+sod(n) for n = 51202020564095 and 51202020564104.

It is not an unprimeable number, because it can be changed into a prime (51202020564133) 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, 3115986220 + ... + 3116002651.

It is an arithmetic number, because the mean of its divisors is an integer number (3271794157800).

Almost surely, 2^{51202020564136} is an apocalyptic number.

It is an amenable number.

51202020564136 is an abundant number, since it is smaller than the sum of its proper divisors (53495392485464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51202020564136 is a wasteful number, since it uses less digits than its factorization.

51202020564136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6231988969 (or 6231988965 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 51202020564136 in words is "fifty-one trillion, two hundred two billion, twenty million, five hundred sixty-four thousand, one hundred thirty-six".