51399237796 has 9 divisors (see below), whose sum is σ = 89949459649. Its totient is φ = 25699392184.

The previous prime is 51399237763. The next prime is 51399237803. The reversal of 51399237796 is 69773299315.

The square root of 51399237796 is 226714.

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

It can be written as a sum of positive squares in only one way, i.e., 982822500 + 50416415296 = 31350^2 + 224536^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 396750 + ... + 510106.

Almost surely, 2^51399237796 is an apocalyptic number.

51399237796 is the 226714-th square number.

It is an amenable number.

51399237796 is a deficient number, since it is larger than the sum of its proper divisors (38550221853).

51399237796 is an frugal number, since it uses more digits than its factorization.

51399237796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226718 (or 113359 counting only the distinct ones).

The product of its digits is 19289340, while the sum is 61.

The spelling of 51399237796 in words is "fifty-one billion, three hundred ninety-nine million, two hundred thirty-seven thousand, seven hundred ninety-six".