204155415030980 has 96 divisors (see below), whose sum is σ = 507055611363840. Its totient is φ = 67557549588480.

The previous prime is 204155415030979. The next prime is 204155415031027. The reversal of 204155415030980 is 89030514551402.

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, 1732484 + ... + 20280836.

It is an arithmetic number, because the mean of its divisors is an integer number (5281829285040).

Almost surely, 2^{204155415030980} is an apocalyptic number.

204155415030980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204155415030980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253527805681920).

204155415030980 is an abundant number, since it is smaller than the sum of its proper divisors (302900196332860).

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

204155415030980 is a wasteful number, since it uses less digits than its factorization.

204155415030980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18551109 (or 18551107 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 47.

The spelling of 204155415030980 in words is "two hundred four trillion, one hundred fifty-five billion, four hundred fifteen million, thirty thousand, nine hundred eighty".