51681203393296 has 15 divisors (see below), whose sum is σ = 100132387289013. Its totient is φ = 25840587318720.

The previous prime is 51681203393269. The next prime is 51681203393311. The reversal of 51681203393296 is 69239330218615.

The square root of 51681203393296 is 7188964.

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., 47005229633296 + 4675973760000 = 6856036^2 + 2162400^2 .

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 51681203393296.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 27857236 + ... + 29654476.

Almost surely, 2^{51681203393296} is an apocalyptic number.

51681203393296 is the 7188964-th square number.

It is an amenable number.

51681203393296 is a deficient number, since it is larger than the sum of its proper divisors (48451183895717).

51681203393296 is an frugal number, since it uses more digits than its factorization.

51681203393296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594490 (or 1797243 counting only the distinct ones).

The product of its (nonzero) digits is 12597120, while the sum is 58.

The spelling of 51681203393296 in words is "fifty-one trillion, six hundred eighty-one billion, two hundred three million, three hundred ninety-three thousand, two hundred ninety-six".