204131012635 has 64 divisors (see below), whose sum is σ = 274642099200. Its totient is φ = 144406080000.

The previous prime is 204131012621. The next prime is 204131012639. The reversal of 204131012635 is 536210131402.

It is not a de Polignac number, because 204131012635 - 2¹³ = 204131004443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204131012639) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 137646604 + ... + 137648086.

It is an arithmetic number, because the mean of its divisors is an integer number (4291282800).

Almost surely, 2^204131012635 is an apocalyptic number.

204131012635 is a deficient number, since it is larger than the sum of its proper divisors (70511086565).

204131012635 is a wasteful number, since it uses less digits than its factorization.

204131012635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 204131012635 in words is "two hundred four billion, one hundred thirty-one million, twelve thousand, six hundred thirty-five".