204052636578 has 32 divisors (see below), whose sum is σ = 475924521600. Its totient is φ = 58300752720.

The previous prime is 204052636561. The next prime is 204052636621. The reversal of 204052636578 is 875636250402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49573413 + ... + 49577528.

It is an arithmetic number, because the mean of its divisors is an integer number (14872641300).

Almost surely, 2^204052636578 is an apocalyptic number.

204052636578 is an abundant number, since it is smaller than the sum of its proper divisors (271871885022).

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

204052636578 is an equidigital number, since it uses as much as digits as its factorization.

204052636578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99150967 (or 99150953 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 48.

The spelling of 204052636578 in words is "two hundred four billion, fifty-two million, six hundred thirty-six thousand, five hundred seventy-eight".