51006050605656 has 24 divisors (see below), whose sum is σ = 138141387057180. Its totient is φ = 17002016868528.

The previous prime is 51006050605639. The next prime is 51006050605751. The reversal of 51006050605656 is 65650605060015.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 354208684690 + ... + 354208684833.

Almost surely, 2^{51006050605656} is an apocalyptic number.

It is an amenable number.

51006050605656 is an abundant number, since it is smaller than the sum of its proper divisors (87135336451524).

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

51006050605656 is a wasteful number, since it uses less digits than its factorization.

51006050605656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708417369535 (or 708417369528 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The spelling of 51006050605656 in words is "fifty-one trillion, six billion, fifty million, six hundred five thousand, six hundred fifty-six".