51406136766 has 24 divisors (see below), whose sum is σ = 117931726224. Its totient is φ = 16127415360.

The previous prime is 51406136713. The next prime is 51406136801. The reversal of 51406136766 is 66763160415.

51406136766 is a `hidden beast` number, since 51 + 406 + 136 + 7 + 66 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83996650 + ... + 83997261.

It is an arithmetic number, because the mean of its divisors is an integer number (4913821926).

Almost surely, 2^51406136766 is an apocalyptic number.

51406136766 is an abundant number, since it is smaller than the sum of its proper divisors (66525589458).

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

51406136766 is a wasteful number, since it uses less digits than its factorization.

51406136766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167993936 (or 167993933 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 51406136766 in words is "fifty-one billion, four hundred six million, one hundred thirty-six thousand, seven hundred sixty-six".