51385510032 has 80 divisors (see below), whose sum is σ = 142101024000. Its totient is φ = 15951952512.

The previous prime is 51385510021. The next prime is 51385510039. The reversal of 51385510032 is 23001558315.

It is a junction number, because it is equal to n+sod(n) for n = 51385509975 and 51385510002.

It is not an unprimeable number, because it can be changed into a prime (51385510039) 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 15 ways as a sum of consecutive naturals, for example, 423682 + ... + 531297.

It is an arithmetic number, because the mean of its divisors is an integer number (1776262800).

Almost surely, 2^51385510032 is an apocalyptic number.

It is an amenable number.

51385510032 is an abundant number, since it is smaller than the sum of its proper divisors (90715513968).

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

51385510032 is a wasteful number, since it uses less digits than its factorization.

51385510032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955068 (or 955062 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 51385510032 in words is "fifty-one billion, three hundred eighty-five million, five hundred ten thousand, thirty-two".