51408881132 has 24 divisors (see below), whose sum is σ = 102882802176. Its totient is φ = 22018440528.

The previous prime is 51408881101. The next prime is 51408881143. The reversal of 51408881132 is 23118880415.

It is a self number, because there is not a number n which added to its sum of digits gives 51408881132.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 535598 + ... + 624245.

It is an arithmetic number, because the mean of its divisors is an integer number (4286783424).

Almost surely, 2^51408881132 is an apocalyptic number.

It is an amenable number.

51408881132 is an abundant number, since it is smaller than the sum of its proper divisors (51473921044).

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

51408881132 is a wasteful number, since it uses less digits than its factorization.

51408881132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161437 (or 1161435 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 41.

The spelling of 51408881132 in words is "fifty-one billion, four hundred eight million, eight hundred eighty-one thousand, one hundred thirty-two".