51005551116 has 48 divisors (see below), whose sum is σ = 128184744800. Its totient is φ = 15691940352.

The previous prime is 51005551087. The next prime is 51005551123. The reversal of 51005551116 is 61115550015.

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, 1507230 + ... + 1540698.

Almost surely, 2^51005551116 is an apocalyptic number.

It is an amenable number.

51005551116 is an abundant number, since it is smaller than the sum of its proper divisors (77179193684).

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

51005551116 is a wasteful number, since it uses less digits than its factorization.

51005551116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43258 (or 43256 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 30.

The spelling of 51005551116 in words is "fifty-one billion, five million, five hundred fifty-one thousand, one hundred sixteen".