204387963400 has 48 divisors (see below), whose sum is σ = 475231876740. Its totient is φ = 81750048000.

The previous prime is 204387963397. The next prime is 204387963421. The reversal of 204387963400 is 4369783402.

It can be written as a sum of positive squares in 6 ways, for example, as 1471949956 + 202916013444 = 38366^2 + 450462^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5802642 + ... + 5837758.

Almost surely, 2^204387963400 is an apocalyptic number.

204387963400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204387963400 is an abundant number, since it is smaller than the sum of its proper divisors (270843913340).

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

204387963400 is a wasteful number, since it uses less digits than its factorization.

204387963400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64234 (or 64225 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 46.

The spelling of 204387963400 in words is "two hundred four billion, three hundred eighty-seven million, nine hundred sixty-three thousand, four hundred".