51980352064 has 21 divisors (see below), whose sum is σ = 103152130627. Its totient is φ = 25989264064.

The previous prime is 51980352043. The next prime is 51980352101. The reversal of 51980352064 is 46025308915.

The square root of 51980352064 is 227992.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51980352064.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1809687 + ... + 1838185.

Almost surely, 2^51980352064 is an apocalyptic number.

51980352064 is the 227992-nd square number.

It is an amenable number.

51980352064 is a deficient number, since it is larger than the sum of its proper divisors (51171778563).

51980352064 is an frugal number, since it uses more digits than its factorization.

51980352064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57010 (or 28501 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The spelling of 51980352064 in words is "fifty-one billion, nine hundred eighty million, three hundred fifty-two thousand, sixty-four".