44291561672 has 16 divisors (see below), whose sum is σ = 85072207500. Its totient is φ = 21605639680.

The previous prime is 44291561669. The next prime is 44291561681. The reversal of 44291561672 is 27616519244.

It can be written as a sum of positive squares in 2 ways, for example, as 29154196516 + 15137365156 = 170746^2 + 123034^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67517297 + ... + 67517952.

Almost surely, 2^44291561672 is an apocalyptic number.

It is an amenable number.

44291561672 is a deficient number, since it is larger than the sum of its proper divisors (40780645828).

44291561672 is a wasteful number, since it uses less digits than its factorization.

44291561672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135035296 (or 135035292 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The spelling of 44291561672 in words is "forty-four billion, two hundred ninety-one million, five hundred sixty-one thousand, six hundred seventy-two".