40044020423 has 16 divisors (see below), whose sum is σ = 43870405632. Its totient is φ = 36248796000.

The previous prime is 40044020371. The next prime is 40044020447. The reversal of 40044020423 is 32402044004.

40044020423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40044020423 - 2²² = 40039826119 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 (40044020453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8317565 + ... + 8322377.

It is an arithmetic number, because the mean of its divisors is an integer number (2741900352).

Almost surely, 2^40044020423 is an apocalyptic number.

40044020423 is a deficient number, since it is larger than the sum of its proper divisors (3826385209).

40044020423 is a wasteful number, since it uses less digits than its factorization.

40044020423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7886.

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 40044020423 its reverse (32402044004), we get a palindrome (72446064427).

The spelling of 40044020423 in words is "forty billion, forty-four million, twenty thousand, four hundred twenty-three".