204537697980 has 192 divisors, whose sum is σ = 714391114752. Its totient is φ = 42479400960.

The previous prime is 204537697957. The next prime is 204537697999. The reversal of 204537697980 is 89796735402.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9862582 + ... + 9883298.

It is an arithmetic number, because the mean of its divisors is an integer number (3720787056).

Almost surely, 2^204537697980 is an apocalyptic number.

204537697980 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 204537697980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (357195557376).

204537697980 is an abundant number, since it is smaller than the sum of its proper divisors (509853416772).

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

204537697980 is a wasteful number, since it uses less digits than its factorization.

204537697980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22884 (or 22882 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 60.

The spelling of 204537697980 in words is "two hundred four billion, five hundred thirty-seven million, six hundred ninety-seven thousand, nine hundred eighty".