204436769820 has 24 divisors (see below), whose sum is σ = 572422955664. Its totient is φ = 54516471936.

The previous prime is 204436769813. The next prime is 204436769833. The reversal of 204436769820 is 28967634402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1703639689 + ... + 1703639808.

It is an arithmetic number, because the mean of its divisors is an integer number (23850956486).

Almost surely, 2^204436769820 is an apocalyptic number.

204436769820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204436769820 is an abundant number, since it is smaller than the sum of its proper divisors (367986185844).

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

204436769820 is a wasteful number, since it uses less digits than its factorization.

204436769820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407279509 (or 3407279507 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 51.

The spelling of 204436769820 in words is "two hundred four billion, four hundred thirty-six million, seven hundred sixty-nine thousand, eight hundred twenty".