51777731706 has 64 divisors (see below), whose sum is σ = 109712361600. Its totient is φ = 16245225216.

The previous prime is 51777731683. The next prime is 51777731743. The reversal of 51777731706 is 60713777715.

51777731706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12172276 + ... + 12176528.

It is an arithmetic number, because the mean of its divisors is an integer number (1714255650).

Almost surely, 2^51777731706 is an apocalyptic number.

51777731706 is an abundant number, since it is smaller than the sum of its proper divisors (57934629894).

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

51777731706 is a wasteful number, since it uses less digits than its factorization.

51777731706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4943.

The product of its (nonzero) digits is 1512630, while the sum is 51.

The spelling of 51777731706 in words is "fifty-one billion, seven hundred seventy-seven million, seven hundred thirty-one thousand, seven hundred six".