44500021564 has 24 divisors (see below), whose sum is σ = 78619666608. Its totient is φ = 22037349120.

The previous prime is 44500021541. The next prime is 44500021571. The reversal of 44500021564 is 46512000544.

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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2848254 + ... + 2863834.

It is an arithmetic number, because the mean of its divisors is an integer number (3275819442).

Almost surely, 2^44500021564 is an apocalyptic number.

It is an amenable number.

44500021564 is a deficient number, since it is larger than the sum of its proper divisors (34119645044).

44500021564 is a wasteful number, since it uses less digits than its factorization.

44500021564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22365 (or 22363 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 44500021564 in words is "forty-four billion, five hundred million, twenty-one thousand, five hundred sixty-four".