44531540013 has 4 divisors (see below), whose sum is σ = 59375386688. Its totient is φ = 29687693340.

The previous prime is 44531539991. The next prime is 44531540023. The reversal of 44531540013 is 31004513544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 44531540013 - 2⁵ = 44531539981 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 (44531540023) 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, 7421923333 + ... + 7421923338.

It is an arithmetic number, because the mean of its divisors is an integer number (14843846672).

Almost surely, 2^44531540013 is an apocalyptic number.

It is an amenable number.

44531540013 is a deficient number, since it is larger than the sum of its proper divisors (14843846675).

44531540013 is a wasteful number, since it uses less digits than its factorization.

44531540013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14843846674.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 44531540013 in words is "forty-four billion, five hundred thirty-one million, five hundred forty thousand, thirteen".