51913435392 has 216 divisors, whose sum is σ = 184221337664. Its totient is φ = 13691400192.

The previous prime is 51913435367. The next prime is 51913435411. The reversal of 51913435392 is 29353431915.

51913435392 is a `hidden beast` number, since 519 + 1 + 3 + 43 + 5 + 3 + 92 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85863 + ... + 333465.

Almost surely, 2^51913435392 is an apocalyptic number.

51913435392 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51913435392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92110668832).

51913435392 is an abundant number, since it is smaller than the sum of its proper divisors (132307902272).

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

51913435392 is a wasteful number, since it uses less digits than its factorization.

51913435392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247645 (or 247628 counting only the distinct ones).

The product of its digits is 437400, while the sum is 45.

The spelling of 51913435392 in words is "fifty-one billion, nine hundred thirteen million, four hundred thirty-five thousand, three hundred ninety-two".