51302879616 has 64 divisors (see below), whose sum is σ = 144289367280. Its totient is φ = 16095019008.

The previous prime is 51302879587. The next prime is 51302879623. The reversal of 51302879616 is 61697820315.

51302879616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 3922921 + ... + 3935976.

Almost surely, 2^51302879616 is an apocalyptic number.

It is an amenable number.

51302879616 is an abundant number, since it is smaller than the sum of its proper divisors (92986487664).

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

51302879616 is a wasteful number, since it uses less digits than its factorization.

51302879616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7858931 (or 7858919 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 51302879616 in words is "fifty-one billion, three hundred two million, eight hundred seventy-nine thousand, six hundred sixteen".