44066591901 has 12 divisors (see below), whose sum is σ = 63681557212. Its totient is φ = 29363967936.

The previous prime is 44066591897. The next prime is 44066591903. The reversal of 44066591901 is 10919566044.

It is a happy number.

44066591901 is a `hidden beast` number, since 4 + 406 + 6 + 59 + 190 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1198959876 + 42867632025 = 34626^2 + 207045^2 .

It is not a de Polignac number, because 44066591901 - 2² = 44066591897 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44066591903) 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, 1126366 + ... + 1164831.

Almost surely, 2^44066591901 is an apocalyptic number.

It is an amenable number.

44066591901 is a deficient number, since it is larger than the sum of its proper divisors (19614965311).

44066591901 is a wasteful number, since it uses less digits than its factorization.

44066591901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293340 (or 2293337 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 44066591901 in words is "forty-four billion, sixty-six million, five hundred ninety-one thousand, nine hundred one".