51407485408 has 24 divisors (see below), whose sum is σ = 102923888760. Its totient is φ = 25268085120.

The previous prime is 51407485397. The next prime is 51407485421. The reversal of 51407485408 is 80458470415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13612383 + ... + 13616158.

It is an arithmetic number, because the mean of its divisors is an integer number (4288495365).

Almost surely, 2^51407485408 is an apocalyptic number.

It is an amenable number.

51407485408 is an abundant number, since it is smaller than the sum of its proper divisors (51516403352).

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

51407485408 is a wasteful number, since it uses less digits than its factorization.

51407485408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27228610 (or 27228602 counting only the distinct ones).

The product of its (nonzero) digits is 716800, while the sum is 46.

The spelling of 51407485408 in words is "fifty-one billion, four hundred seven million, four hundred eighty-five thousand, four hundred eight".