51996640332 has 72 divisors (see below), whose sum is σ = 150144185856. Its totient is φ = 13713395904.

The previous prime is 51996640303. The next prime is 51996640343. The reversal of 51996640332 is 23304669915.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1817188 + ... + 1845579.

Almost surely, 2^51996640332 is an apocalyptic number.

51996640332 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51996640332 is an abundant number, since it is smaller than the sum of its proper divisors (98147545524).

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

51996640332 is a wasteful number, since it uses less digits than its factorization.

51996640332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3662807 (or 3662792 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 48.

The spelling of 51996640332 in words is "fifty-one billion, nine hundred ninety-six million, six hundred forty thousand, three hundred thirty-two".