204635106553 has 16 divisors (see below), whose sum is σ = 217122336000. Its totient is φ = 192198182400.

The previous prime is 204635106493. The next prime is 204635106589. The reversal of 204635106553 is 355601536402.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204635106553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204635106853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32167093 + ... + 32173453.

It is an arithmetic number, because the mean of its divisors is an integer number (13570146000).

Almost surely, 2^204635106553 is an apocalyptic number.

It is an amenable number.

204635106553 is a deficient number, since it is larger than the sum of its proper divisors (12487229447).

204635106553 is a wasteful number, since it uses less digits than its factorization.

204635106553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10008.

The product of its (nonzero) digits is 324000, while the sum is 40.

The spelling of 204635106553 in words is "two hundred four billion, six hundred thirty-five million, one hundred six thousand, five hundred fifty-three".