51015895768 has 32 divisors (see below), whose sum is σ = 96779124000. Its totient is φ = 25208423680.

The previous prime is 51015895757. The next prime is 51015895837. The reversal of 51015895768 is 86759851015.

It is a super-2 number, since 2×51015895768² (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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1455813 + ... + 1490443.

It is an arithmetic number, because the mean of its divisors is an integer number (3024347625).

Almost surely, 2^51015895768 is an apocalyptic number.

It is an amenable number.

51015895768 is a deficient number, since it is larger than the sum of its proper divisors (45763228232).

51015895768 is a wasteful number, since it uses less digits than its factorization.

51015895768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36795 (or 36791 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 55.

The spelling of 51015895768 in words is "fifty-one billion, fifteen million, eight hundred ninety-five thousand, seven hundred sixty-eight".