51020767679 has 16 divisors (see below), whose sum is σ = 60342560256. Its totient is φ = 42225300000.

The previous prime is 51020767673. The next prime is 51020767691. The reversal of 51020767679 is 97676702015.

It is a cyclic number.

It is not a de Polignac number, because 51020767679 - 2⁴ = 51020767663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51020767673) 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, 717947 + ... + 785804.

It is an arithmetic number, because the mean of its divisors is an integer number (3771410016).

Almost surely, 2^51020767679 is an apocalyptic number.

51020767679 is a deficient number, since it is larger than the sum of its proper divisors (9321792577).

51020767679 is a wasteful number, since it uses less digits than its factorization.

51020767679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503926.

The product of its (nonzero) digits is 1111320, while the sum is 50.

The spelling of 51020767679 in words is "fifty-one billion, twenty million, seven hundred sixty-seven thousand, six hundred seventy-nine".