51896596519 has 4 divisors (see below), whose sum is σ = 53686134360. Its totient is φ = 50107058680.

The previous prime is 51896596511. The next prime is 51896596553. The reversal of 51896596519 is 91569569815.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51896596519 - 2³ = 51896596511 is a prime.

It is a super-2 number, since 2×51896596519² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51896596511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 894768877 + ... + 894768934.

It is an arithmetic number, because the mean of its divisors is an integer number (13421533590).

Almost surely, 2^51896596519 is an apocalyptic number.

51896596519 is a deficient number, since it is larger than the sum of its proper divisors (1789537841).

51896596519 is a wasteful number, since it uses less digits than its factorization.

51896596519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1789537840.

The product of its digits is 26244000, while the sum is 64.

The spelling of 51896596519 in words is "fifty-one billion, eight hundred ninety-six million, five hundred ninety-six thousand, five hundred nineteen".