204445655660 has 48 divisors (see below), whose sum is σ = 438539869152. Its totient is φ = 80042227200.

The previous prime is 204445655651. The next prime is 204445655669. The reversal of 204445655660 is 66556544402.

It is an interprime number because it is at equal distance from previous prime (204445655651) and next prime (204445655669).

It is a super-2 number, since 2×204445655660² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204445655669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343211 + ... + 725730.

It is an arithmetic number, because the mean of its divisors is an integer number (9136247274).

Almost surely, 2^204445655660 is an apocalyptic number.

204445655660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204445655660 is an abundant number, since it is smaller than the sum of its proper divisors (234094213492).

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

204445655660 is a wasteful number, since it uses less digits than its factorization.

204445655660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069154 (or 1069152 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 47.

The spelling of 204445655660 in words is "two hundred four billion, four hundred forty-five million, six hundred fifty-five thousand, six hundred sixty".