51871794877 has 16 divisors (see below), whose sum is σ = 59871864832. Its totient is φ = 44019385200.

The previous prime is 51871794851. The next prime is 51871794881. The reversal of 51871794877 is 77849717815.

It is not a de Polignac number, because 51871794877 - 2¹⁵ = 51871762109 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 (51871794847) 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, 5295178 + ... + 5304964.

It is an arithmetic number, because the mean of its divisors is an integer number (3741991552).

Almost surely, 2^51871794877 is an apocalyptic number.

It is an amenable number.

51871794877 is a deficient number, since it is larger than the sum of its proper divisors (8000069955).

51871794877 is a wasteful number, since it uses less digits than its factorization.

51871794877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17248.

The product of its digits is 27659520, while the sum is 64.

The spelling of 51871794877 in words is "fifty-one billion, eight hundred seventy-one million, seven hundred ninety-four thousand, eight hundred seventy-seven".