44412491640 has 512 divisors, whose sum is σ = 157044096000. Its totient is φ = 9934848000.

The previous prime is 44412491639. The next prime is 44412491701. The reversal of 44412491640 is 4619421444.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 225444022 + ... + 225444218.

It is an arithmetic number, because the mean of its divisors is an integer number (306726750).

Almost surely, 2^44412491640 is an apocalyptic number.

44412491640 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 44412491640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78522048000).

44412491640 is an abundant number, since it is smaller than the sum of its proper divisors (112631604360).

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

44412491640 is a wasteful number, since it uses less digits than its factorization.

44412491640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The spelling of 44412491640 in words is "forty-four billion, four hundred twelve million, four hundred ninety-one thousand, six hundred forty".