44145631523 has 4 divisors (see below), whose sum is σ = 50452150320. Its totient is φ = 37839112728.

The previous prime is 44145631511. The next prime is 44145631531. The reversal of 44145631523 is 32513654144.

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 44145631523 - 2¹⁰ = 44145630499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44145631583) 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, 3153259388 + ... + 3153259401.

It is an arithmetic number, because the mean of its divisors is an integer number (12613037580).

Almost surely, 2^44145631523 is an apocalyptic number.

44145631523 is a deficient number, since it is larger than the sum of its proper divisors (6306518797).

44145631523 is an equidigital number, since it uses as much as digits as its factorization.

44145631523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6306518796.

The product of its digits is 172800, while the sum is 38.

The spelling of 44145631523 in words is "forty-four billion, one hundred forty-five million, six hundred thirty-one thousand, five hundred twenty-three".