664833405000 has 80 divisors (see below), whose sum is σ = 2076939604080. Its totient is φ = 177288904000.

The previous prime is 664833404999. The next prime is 664833405029. The reversal of 664833405000 is 504338466.

It is a self number, because there is not a number n which added to its sum of digits gives 664833405000.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22146114 + ... + 22176113.

It is an arithmetic number, because the mean of its divisors is an integer number (25961745051).

Almost surely, 2^664833405000 is an apocalyptic number.

664833405000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

664833405000 is an abundant number, since it is smaller than the sum of its proper divisors (1412106199080).

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

664833405000 is a wasteful number, since it uses less digits than its factorization.

664833405000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44322256 (or 44322237 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 664833405000 in words is "six hundred sixty-four billion, eight hundred thirty-three million, four hundred five thousand".