51436732968 has 64 divisors (see below), whose sum is σ = 150399816000. Its totient is φ = 16243177536.

The previous prime is 51436732957. The next prime is 51436732969. The reversal of 51436732968 is 86923763415.

51436732968 is a `hidden beast` number, since 51 + 436 + 73 + 2 + 96 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (51436732969) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6262555 + ... + 6270762.

It is an arithmetic number, because the mean of its divisors is an integer number (2349997125).

Almost surely, 2^51436732968 is an apocalyptic number.

It is an amenable number.

51436732968 is an abundant number, since it is smaller than the sum of its proper divisors (98963083032).

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

51436732968 is a wasteful number, since it uses less digits than its factorization.

51436732968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12533351 (or 12533341 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 51436732968 in words is "fifty-one billion, four hundred thirty-six million, seven hundred thirty-two thousand, nine hundred sixty-eight".