51088695972 has 24 divisors (see below), whose sum is σ = 119224089600. Its totient is φ = 17027117856.

The previous prime is 51088695941. The next prime is 51088695989. The reversal of 51088695972 is 27959688015.

It is a super-2 number, since 2×51088695972² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217947 + ... + 386882.

It is an arithmetic number, because the mean of its divisors is an integer number (4967670400).

Almost surely, 2^51088695972 is an apocalyptic number.

It is an amenable number.

51088695972 is an abundant number, since it is smaller than the sum of its proper divisors (68135393628).

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

51088695972 is a wasteful number, since it uses less digits than its factorization.

51088695972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611875 (or 611873 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 60.

The spelling of 51088695972 in words is "fifty-one billion, eighty-eight million, six hundred ninety-five thousand, nine hundred seventy-two".