51460202664 has 80 divisors (see below), whose sum is σ = 155223642420. Its totient is φ = 15833905920.

The previous prime is 51460202639. The next prime is 51460202723. The reversal of 51460202664 is 46620206415.

51460202664 is a `hidden beast` number, since 514 + 60 + 2 + 0 + 26 + 64 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 49217422500 + 2242780164 = 221850^2 + 47358^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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 19 ways as a sum of consecutive naturals, for example, 3045957 + ... + 3062804.

Almost surely, 2^51460202664 is an apocalyptic number.

51460202664 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51460202664 is an abundant number, since it is smaller than the sum of its proper divisors (103763439756).

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

51460202664 is a wasteful number, since it uses less digits than its factorization.

51460202664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6108792 (or 6108779 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 51460202664 in words is "fifty-one billion, four hundred sixty million, two hundred two thousand, six hundred sixty-four".