51660303872 has 40 divisors (see below), whose sum is σ = 103301721600. Its totient is φ = 25809629184.

The previous prime is 51660303833. The next prime is 51660303899. The reversal of 51660303872 is 27830306615.

It is a super-2 number, since 2×51660303872² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 615404 + ... + 694292.

It is an arithmetic number, because the mean of its divisors is an integer number (2582543040).

Almost surely, 2^51660303872 is an apocalyptic number.

It is an amenable number.

51660303872 is a deficient number, since it is larger than the sum of its proper divisors (51641417728).

51660303872 is an equidigital number, since it uses as much as digits as its factorization.

51660303872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80186 (or 80170 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 51660303872 in words is "fifty-one billion, six hundred sixty million, three hundred three thousand, eight hundred seventy-two".