40044431523 has 8 divisors (see below), whose sum is σ = 53466020608. Its totient is φ = 26659565064.

The previous prime is 40044431519. The next prime is 40044431569. The reversal of 40044431523 is 32513444004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40044431523 - 2² = 40044431519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40044431503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9178111 + ... + 9182472.

It is an arithmetic number, because the mean of its divisors is an integer number (6683252576).

Almost surely, 2^40044431523 is an apocalyptic number.

40044431523 is a deficient number, since it is larger than the sum of its proper divisors (13421589085).

40044431523 is a wasteful number, since it uses less digits than its factorization.

40044431523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18361313.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 40044431523 its reverse (32513444004), we get a palindrome (72557875527).

The spelling of 40044431523 in words is "forty billion, forty-four million, four hundred thirty-one thousand, five hundred twenty-three".