204856600986 has 32 divisors (see below), whose sum is σ = 455282521920. Its totient is φ = 68278689072.

The previous prime is 204856600943. The next prime is 204856601039. The reversal of 204856600986 is 689006658402.

It is a happy number.

204856600986 is a `hidden beast` number, since 20 + 4 + 8 + 5 + 6 + 600 + 9 + 8 + 6 = 666.

204856600986 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368661 + ... + 738663.

It is an arithmetic number, because the mean of its divisors is an integer number (14227578810).

Almost surely, 2^204856600986 is an apocalyptic number.

204856600986 is an abundant number, since it is smaller than the sum of its proper divisors (250425920934).

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

204856600986 is a wasteful number, since it uses less digits than its factorization.

204856600986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380267 (or 380261 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 204856600986 in words is "two hundred four billion, eight hundred fifty-six million, six hundred thousand, nine hundred eighty-six".