204102554013 has 12 divisors (see below), whose sum is σ = 312156847548. Its totient is φ = 128064347520.

The previous prime is 204102554011. The next prime is 204102554027. The reversal of 204102554013 is 310455201402.

204102554013 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 0 + 255 + 401 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 83647051524 + 120455502489 = 289218^2 + 347067^2 .

It is not a de Polignac number, because 204102554013 - 2¹ = 204102554011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204102554011) 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, 667001658 + ... + 667001963.

It is an arithmetic number, because the mean of its divisors is an integer number (26013070629).

Almost surely, 2^204102554013 is an apocalyptic number.

It is an amenable number.

204102554013 is a deficient number, since it is larger than the sum of its proper divisors (108054293535).

204102554013 is a wasteful number, since it uses less digits than its factorization.

204102554013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334003644 (or 1334003641 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 204102554013 its reverse (310455201402), we get a palindrome (514557755415).

The spelling of 204102554013 in words is "two hundred four billion, one hundred two million, five hundred fifty-four thousand, thirteen".