204880135488 has 56 divisors (see below), whose sum is σ = 619518508992. Its totient is φ = 58537181184.

The previous prime is 204880135457. The next prime is 204880135519. The reversal of 204880135488 is 884531088402.

It is an interprime number because it is at equal distance from previous prime (204880135457) and next prime (204880135519).

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 204880135488.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76218945 + ... + 76221632.

Almost surely, 2^204880135488 is an apocalyptic number.

204880135488 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

204880135488 is an abundant number, since it is smaller than the sum of its proper divisors (414638373504).

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

204880135488 is a wasteful number, since it uses less digits than its factorization.

204880135488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152440599 (or 152440589 counting only the distinct ones).

The product of its (nonzero) digits is 1966080, while the sum is 51.

The spelling of 204880135488 in words is "two hundred four billion, eight hundred eighty million, one hundred thirty-five thousand, four hundred eighty-eight".