204490448868 has 48 divisors (see below), whose sum is σ = 488957466816. Its totient is φ = 66490769280.

The previous prime is 204490448839. The next prime is 204490448879. The reversal of 204490448868 is 868844094402.

It is a super-2 number, since 2×204490448868² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

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, 819238 + ... + 1039293.

It is an arithmetic number, because the mean of its divisors is an integer number (10186613892).

Almost surely, 2^204490448868 is an apocalyptic number.

It is an amenable number.

204490448868 is an abundant number, since it is smaller than the sum of its proper divisors (284467017948).

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

204490448868 is a wasteful number, since it uses less digits than its factorization.

204490448868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858764 (or 1858762 counting only the distinct ones).

The product of its (nonzero) digits is 14155776, while the sum is 57.

The spelling of 204490448868 in words is "two hundred four billion, four hundred ninety million, four hundred forty-eight thousand, eight hundred sixty-eight".