51196738488 has 64 divisors (see below), whose sum is σ = 146303055360. Its totient is φ = 14624973696.

The previous prime is 51196738469. The next prime is 51196738543. The reversal of 51196738488 is 88483769115.

It is a super-2 number, since 2×51196738488² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1012381 + ... + 1061747.

It is an arithmetic number, because the mean of its divisors is an integer number (2285985240).

Almost surely, 2^51196738488 is an apocalyptic number.

It is an amenable number.

51196738488 is an abundant number, since it is smaller than the sum of its proper divisors (95106316872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51196738488 is a wasteful number, since it uses less digits than its factorization.

51196738488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55556 (or 55552 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 60.

The spelling of 51196738488 in words is "fifty-one billion, one hundred ninety-six million, seven hundred thirty-eight thousand, four hundred eighty-eight".