445665632000 has 72 divisors (see below), whose sum is σ = 1110208877232. Its totient is φ = 178266240000.

The previous prime is 445665631991. The next prime is 445665632003. The reversal of 445665632000 is 236566544.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445665632003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6931526 + ... + 6995525.

Almost surely, 2^445665632000 is an apocalyptic number.

445665632000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

445665632000 is an abundant number, since it is smaller than the sum of its proper divisors (664543245232).

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

445665632000 is an equidigital number, since it uses as much as digits as its factorization.

445665632000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13927082 (or 13927058 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 445665632000 in words is "four hundred forty-five billion, six hundred sixty-five million, six hundred thirty-two thousand".