44431265661 has 32 divisors (see below), whose sum is σ = 61844428800. Its totient is φ = 28339227840.

The previous prime is 44431265653. The next prime is 44431265699. The reversal of 44431265661 is 16656213444.

It is not a de Polignac number, because 44431265661 - 2³ = 44431265653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44431261661) 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, 4804480 + ... + 4813718.

It is an arithmetic number, because the mean of its divisors is an integer number (1932638400).

Almost surely, 2^44431265661 is an apocalyptic number.

It is an amenable number.

44431265661 is a deficient number, since it is larger than the sum of its proper divisors (17413163139).

44431265661 is a wasteful number, since it uses less digits than its factorization.

44431265661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9769.

The product of its digits is 414720, while the sum is 42.

The spelling of 44431265661 in words is "forty-four billion, four hundred thirty-one million, two hundred sixty-five thousand, six hundred sixty-one".