51916795884719 has 32 divisors (see below), whose sum is σ = 55423504800000. Its totient is φ = 48492815180544.

The previous prime is 51916795884691. The next prime is 51916795884739. The reversal of 51916795884719 is 91748859761915.

It is a cyclic number.

It is not a de Polignac number, because 51916795884719 - 2²⁰ = 51916794836143 is a prime.

It is a super-2 number, since 2×51916795884719² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (80) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51916795884739) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 635968397 + ... + 636050025.

It is an arithmetic number, because the mean of its divisors is an integer number (1731984525000).

Almost surely, 2^{51916795884719} is an apocalyptic number.

51916795884719 is a deficient number, since it is larger than the sum of its proper divisors (3506708915281).

51916795884719 is a wasteful number, since it uses less digits than its factorization.

51916795884719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83447.

The product of its digits is 1371686400, while the sum is 80.

The spelling of 51916795884719 in words is "fifty-one trillion, nine hundred sixteen billion, seven hundred ninety-five million, eight hundred eighty-four thousand, seven hundred nineteen".