44131112401591 has 4 divisors (see below), whose sum is σ = 44249426376232. Its totient is φ = 44012798426952.

The previous prime is 44131112401583. The next prime is 44131112401703. The reversal of 44131112401591 is 19510421113144.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 44131112401591 - 2³ = 44131112401583 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 44131112401591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44131112401561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59156986761 + ... + 59156987506.

It is an arithmetic number, because the mean of its divisors is an integer number (11062356594058).

Almost surely, 2^{44131112401591} is an apocalyptic number.

44131112401591 is a deficient number, since it is larger than the sum of its proper divisors (118313974641).

44131112401591 is a wasteful number, since it uses less digits than its factorization.

44131112401591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118313974640.

The product of its (nonzero) digits is 17280, while the sum is 37.

The spelling of 44131112401591 in words is "forty-four trillion, one hundred thirty-one billion, one hundred twelve million, four hundred one thousand, five hundred ninety-one".