44091252621 has 12 divisors (see below), whose sum is σ = 68586393148. Its totient is φ = 27133078464.

The previous prime is 44091252619. The next prime is 44091252629. The reversal of 44091252621 is 12625219044.

It is a happy number.

44091252621 is a `hidden beast` number, since 4 + 4 + 0 + 9 + 1 + 25 + 2 + 621 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6054551721 + 38036700900 = 77811^2 + 195030^2 .

It is not a de Polignac number, because 44091252621 - 2¹ = 44091252619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44091252629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188424040 + ... + 188424273.

Almost surely, 2^44091252621 is an apocalyptic number.

It is an amenable number.

44091252621 is a deficient number, since it is larger than the sum of its proper divisors (24495140527).

44091252621 is a wasteful number, since it uses less digits than its factorization.

44091252621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376848332 (or 376848329 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 44091252621 in words is "forty-four billion, ninety-one million, two hundred fifty-two thousand, six hundred twenty-one".