204699987943632 has 30 divisors (see below), whose sum is σ = 572875660703762. Its totient is φ = 68233329314496.

The previous prime is 204699987943631. The next prime is 204699987943667. The reversal of 204699987943632 is 236349789996402.

204699987943632 is a `hidden beast` number, since 2 + 0 + 4 + 6 + 9 + 99 + 87 + 94 + 363 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 200136364065936 + 4563623877696 = 14146956^2 + 2136264^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204699987943631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 710763846883 + ... + 710763847170.

Almost surely, 2^{204699987943632} is an apocalyptic number.

It is an amenable number.

204699987943632 is an abundant number, since it is smaller than the sum of its proper divisors (368175672760130).

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

204699987943632 is a wasteful number, since it uses less digits than its factorization.

204699987943632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421527694067 (or 1421527694058 counting only the distinct ones).

The product of its (nonzero) digits is 7618738176, while the sum is 81.

The spelling of 204699987943632 in words is "two hundred four trillion, six hundred ninety-nine billion, nine hundred eighty-seven million, nine hundred forty-three thousand, six hundred thirty-two".