51606515156 has 24 divisors (see below), whose sum is σ = 103218842496. Its totient is φ = 22115832480.

The previous prime is 51606515141. The next prime is 51606515173. The reversal of 51606515156 is 65151560615.

It is a congruent number.

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, 596225 + ... + 677271.

It is an arithmetic number, because the mean of its divisors is an integer number (4300785104).

Almost surely, 2^51606515156 is an apocalyptic number.

It is an amenable number.

51606515156 is an abundant number, since it is smaller than the sum of its proper divisors (51612327340).

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

51606515156 is a wasteful number, since it uses less digits than its factorization.

51606515156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103799 (or 103797 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 41.

The spelling of 51606515156 in words is "fifty-one billion, six hundred six million, five hundred fifteen thousand, one hundred fifty-six".