253016643204 has 72 divisors (see below), whose sum is σ = 689270930712. Its totient is φ = 77794375680.

The previous prime is 253016643193. The next prime is 253016643221. The reversal of 253016643204 is 402346610352.

253016643204 is a `hidden beast` number, since 2 + 5 + 3 + 0 + 1 + 6 + 643 + 2 + 0 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 140152896900 + 112863746304 = 374370^2 + 335952^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 445684 + ... + 839444.

It is an arithmetic number, because the mean of its divisors is an integer number (9573207371).

Almost surely, 2^253016643204 is an apocalyptic number.

It is an amenable number.

253016643204 is an abundant number, since it is smaller than the sum of its proper divisors (436254287508).

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

253016643204 is a wasteful number, since it uses less digits than its factorization.

253016643204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395157 (or 395152 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 253016643204 in words is "two hundred fifty-three billion, sixteen million, six hundred forty-three thousand, two hundred four".