204651984940 has 48 divisors (see below), whose sum is σ = 462869366400. Its totient is φ = 75557111040.

The previous prime is 204651984937. The next prime is 204651985019. The reversal of 204651984940 is 49489156402.

It is a super-3 number, since 3×204651984940³ (a number of 35 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (52).

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, 3650925 + ... + 3706555.

It is an arithmetic number, because the mean of its divisors is an integer number (9643111800).

Almost surely, 2^204651984940 is an apocalyptic number.

204651984940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204651984940 is an abundant number, since it is smaller than the sum of its proper divisors (258217381460).

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

204651984940 is a wasteful number, since it uses less digits than its factorization.

204651984940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69802 (or 69800 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 52.

The spelling of 204651984940 in words is "two hundred four billion, six hundred fifty-one million, nine hundred eighty-four thousand, nine hundred forty".