44899984640 has 144 divisors (see below), whose sum is σ = 123098183040. Its totient is φ = 15371182080.

The previous prime is 44899984609. The next prime is 44899984669. The reversal of 44899984640 is 4648999844.

It is a congruent number.

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, 6618050 + ... + 6624830.

Almost surely, 2^44899984640 is an apocalyptic number.

44899984640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44899984640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61549091520).

44899984640 is an abundant number, since it is smaller than the sum of its proper divisors (78198198400).

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

44899984640 is an equidigital number, since it uses as much as digits as its factorization.

44899984640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7548 (or 7534 counting only the distinct ones).

The product of its (nonzero) digits is 71663616, while the sum is 65.

The spelling of 44899984640 in words is "forty-four billion, eight hundred ninety-nine million, nine hundred eighty-four thousand, six hundred forty".