205131461604 has 96 divisors (see below), whose sum is σ = 521392636800. Its totient is φ = 62522127360.

The previous prime is 205131461599. The next prime is 205131461617. The reversal of 205131461604 is 406164131502.

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, 34782784 + ... + 34788680.

It is an arithmetic number, because the mean of its divisors is an integer number (5431173300).

Almost surely, 2^205131461604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205131461604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260696318400).

205131461604 is an abundant number, since it is smaller than the sum of its proper divisors (316261175196).

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

205131461604 is a wasteful number, since it uses less digits than its factorization.

205131461604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11213 (or 11211 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The spelling of 205131461604 in words is "two hundred five billion, one hundred thirty-one million, four hundred sixty-one thousand, six hundred four".