51130565420 has 48 divisors (see below), whose sum is σ = 117152179200. Its totient is φ = 18590281920.

The previous prime is 51130565419. The next prime is 51130565459. The reversal of 51130565420 is 2456503115.

It is a super-2 number, since 2×51130565420² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2205851 + ... + 2228909.

It is an arithmetic number, because the mean of its divisors is an integer number (2440670400).

Almost surely, 2^51130565420 is an apocalyptic number.

It is an amenable number.

51130565420 is an abundant number, since it is smaller than the sum of its proper divisors (66021613780).

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

51130565420 is a wasteful number, since it uses less digits than its factorization.

51130565420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33158 (or 33156 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 51130565420 in words is "fifty-one billion, one hundred thirty million, five hundred sixty-five thousand, four hundred twenty".