51412520432 has 160 divisors (see below), whose sum is σ = 129320056320. Its totient is φ = 19228492800.

The previous prime is 51412520407. The next prime is 51412520479. The reversal of 51412520432 is 23402521415.

It is a junction number, because it is equal to n+sod(n) for n = 51412520395 and 51412520404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15573182 + ... + 15576482.

It is an arithmetic number, because the mean of its divisors is an integer number (808250352).

Almost surely, 2^51412520432 is an apocalyptic number.

51412520432 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 51412520432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64660028160).

51412520432 is an abundant number, since it is smaller than the sum of its proper divisors (77907535888).

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

51412520432 is a wasteful number, since it uses less digits than its factorization.

51412520432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911 (or 3905 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 51412520432 in words is "fifty-one billion, four hundred twelve million, five hundred twenty thousand, four hundred thirty-two".