51402112634220 has 96 divisors (see below), whose sum is σ = 149190314434560. Its totient is φ = 13209558862080.

The previous prime is 51402112634219. The next prime is 51402112634233. The reversal of 51402112634220 is 2243621120415.

It is a super-2 number, since 2×51402112634220² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57370407 + ... + 58259486.

It is an arithmetic number, because the mean of its divisors is an integer number (1554065775360).

Almost surely, 2^{51402112634220} is an apocalyptic number.

It is an amenable number.

51402112634220 is an abundant number, since it is smaller than the sum of its proper divisors (97788201800340).

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

51402112634220 is a wasteful number, since it uses less digits than its factorization.

51402112634220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115630175 (or 115630173 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

Adding to 51402112634220 its reverse (2243621120415), we get a palindrome (53645733754635).

The spelling of 51402112634220 in words is "fifty-one trillion, four hundred two billion, one hundred twelve million, six hundred thirty-four thousand, two hundred twenty".