44005621161 has 16 divisors (see below), whose sum is σ = 59019796800. Its totient is φ = 29164363008.

The previous prime is 44005621157. The next prime is 44005621169. The reversal of 44005621161 is 16112650044.

It is not a de Polignac number, because 44005621161 - 2² = 44005621157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (44005621169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2099445 + ... + 2120301.

It is an arithmetic number, because the mean of its divisors is an integer number (3688737300).

Almost surely, 2^44005621161 is an apocalyptic number.

It is an amenable number.

44005621161 is a deficient number, since it is larger than the sum of its proper divisors (15014175639).

44005621161 is a wasteful number, since it uses less digits than its factorization.

44005621161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24968.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 44005621161 in words is "forty-four billion, five million, six hundred twenty-one thousand, one hundred sixty-one".