51785073879 has 16 divisors (see below), whose sum is σ = 86084279040. Its totient is φ = 26901336960.

The previous prime is 51785073869. The next prime is 51785073881. The reversal of 51785073879 is 97837058715.

It is not a de Polignac number, because 51785073879 - 2⁷ = 51785073751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51785073869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112088674 + ... + 112089135.

It is an arithmetic number, because the mean of its divisors is an integer number (5380267440).

Almost surely, 2^51785073879 is an apocalyptic number.

51785073879 is a deficient number, since it is larger than the sum of its proper divisors (34299205161).

51785073879 is a wasteful number, since it uses less digits than its factorization.

51785073879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224177830.

The product of its (nonzero) digits is 14817600, while the sum is 60.

The spelling of 51785073879 in words is "fifty-one billion, seven hundred eighty-five million, seventy-three thousand, eight hundred seventy-nine".