51880213968 has 80 divisors (see below), whose sum is σ = 146298064896. Its totient is φ = 15711579520.

The previous prime is 51880213943. The next prime is 51880214033. The reversal of 51880213968 is 86931208815.

It is a self number, because there is not a number n which added to its sum of digits gives 51880213968.

It is a congruent number.

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, 850705 + ... + 909647.

Almost surely, 2^51880213968 is an apocalyptic number.

It is an amenable number.

51880213968 is an abundant number, since it is smaller than the sum of its proper divisors (94417850928).

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

51880213968 is a wasteful number, since it uses less digits than its factorization.

51880213968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60632 (or 60626 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 51.

The spelling of 51880213968 in words is "fifty-one billion, eight hundred eighty million, two hundred thirteen thousand, nine hundred sixty-eight".