445991836992 has 112 divisors (see below), whose sum is σ = 1272771769920. Its totient is φ = 137014345728.

The previous prime is 445991836991. The next prime is 445991837009. The reversal of 445991836992 is 299638199544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445991836991) 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, 1465984 + ... + 1743872.

It is an arithmetic number, because the mean of its divisors is an integer number (11364033660).

Almost surely, 2^445991836992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 445991836992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636385884960).

445991836992 is an abundant number, since it is smaller than the sum of its proper divisors (826779932928).

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

445991836992 is a wasteful number, since it uses less digits than its factorization.

445991836992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278560 (or 278550 counting only the distinct ones).

The product of its digits is 151165440, while the sum is 69.

The spelling of 445991836992 in words is "four hundred forty-five billion, nine hundred ninety-one million, eight hundred thirty-six thousand, nine hundred ninety-two".