51812025522336 has 72 divisors (see below), whose sum is σ = 147341500877844. Its totient is φ = 17270551710720.

The previous prime is 51812025522331. The next prime is 51812025522409. The reversal of 51812025522336 is 63322552021815.

51812025522336 is a `hidden beast` number, since 5 + 1 + 81 + 20 + 25 + 522 + 3 + 3 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46151642250000 + 5660383272336 = 6793500^2 + 2379156^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 51812025522291 and 51812025522300.

It is not an unprimeable number, because it can be changed into a prime (51812025522331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45436470 + ... + 46562826.

Almost surely, 2^{51812025522336} is an apocalyptic number.

It is an amenable number.

51812025522336 is an abundant number, since it is smaller than the sum of its proper divisors (95529475355508).

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

51812025522336 is a wasteful number, since it uses less digits than its factorization.

51812025522336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286094 (or 1286083 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 51812025522336 in words is "fifty-one trillion, eight hundred twelve billion, twenty-five million, five hundred twenty-two thousand, three hundred thirty-six".