44949943521 has 32 divisors (see below), whose sum is σ = 76115859200. Its totient is φ = 25682261760.

The previous prime is 44949943517. The next prime is 44949943541. The reversal of 44949943521 is 12534994944.

44949943521 is a `hidden beast` number, since 4 + 494 + 99 + 43 + 5 + 21 = 666.

It is not a de Polignac number, because 44949943521 - 2² = 44949943517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44949943541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2303835 + ... + 2323263.

It is an arithmetic number, because the mean of its divisors is an integer number (2378620600).

Almost surely, 2^44949943521 is an apocalyptic number.

It is an amenable number.

44949943521 is a deficient number, since it is larger than the sum of its proper divisors (31165915679).

44949943521 is a wasteful number, since it uses less digits than its factorization.

44949943521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31686 (or 31680 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 54.

The spelling of 44949943521 in words is "forty-four billion, nine hundred forty-nine million, nine hundred forty-three thousand, five hundred twenty-one".