204311878600 has 48 divisors (see below), whose sum is σ = 502967780100. Its totient is φ = 76917411840.

The previous prime is 204311878577. The next prime is 204311878601. The reversal of 204311878600 is 6878113402.

It can be written as a sum of positive squares in 6 ways, for example, as 141982761636 + 62329116964 = 376806^2 + 249658^2 .

It is a super-2 number, since 2×204311878600² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (204311878601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30042465 + ... + 30049264.

Almost surely, 2^204311878600 is an apocalyptic number.

204311878600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204311878600 is an abundant number, since it is smaller than the sum of its proper divisors (298655901500).

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

204311878600 is a wasteful number, since it uses less digits than its factorization.

204311878600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60091762 (or 60091753 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 204311878600 in words is "two hundred four billion, three hundred eleven million, eight hundred seventy-eight thousand, six hundred".