51147934432 has 96 divisors (see below), whose sum is σ = 116678016000. Its totient is φ = 21617376768.

The previous prime is 51147934429. The next prime is 51147934441. The reversal of 51147934432 is 23443974115.

51147934432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51147934432² (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, 26242194 + ... + 26244142.

It is an arithmetic number, because the mean of its divisors is an integer number (1215396000).

Almost surely, 2^51147934432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51147934432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58339008000).

51147934432 is an abundant number, since it is smaller than the sum of its proper divisors (65530081568).

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

51147934432 is a wasteful number, since it uses less digits than its factorization.

51147934432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3528 (or 3520 counting only the distinct ones).

The product of its digits is 362880, while the sum is 43.

The spelling of 51147934432 in words is "fifty-one billion, one hundred forty-seven million, nine hundred thirty-four thousand, four hundred thirty-two".