204420251500056 has 128 divisors (see below), whose sum is σ = 576482586624000. Its totient is φ = 67110089953536.

The previous prime is 204420251500033. The next prime is 204420251500061. The reversal of 204420251500056 is 650005152024402.

204420251500056 is a `hidden beast` number, since 20 + 44 + 20 + 25 + 1 + 500 + 0 + 56 = 666.

It is a super-2 number, since 2×204420251500056² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23438496 + ... + 30954863.

It is an arithmetic number, because the mean of its divisors is an integer number (4503770208000).

Almost surely, 2^{204420251500056} is an apocalyptic number.

It is an amenable number.

204420251500056 is an abundant number, since it is smaller than the sum of its proper divisors (372062335123944).

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

204420251500056 is a wasteful number, since it uses less digits than its factorization.

204420251500056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54393638 (or 54393628 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The spelling of 204420251500056 in words is "two hundred four trillion, four hundred twenty billion, two hundred fifty-one million, five hundred thousand, fifty-six".