40043601536 has 32 divisors (see below), whose sum is σ = 79891336800. Its totient is φ = 19992442624.

The previous prime is 40043601527. The next prime is 40043601539. The reversal of 40043601536 is 63510634004.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (40043601539) 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, 141596 + ... + 316443.

It is an arithmetic number, because the mean of its divisors is an integer number (2496604275).

Almost surely, 2^40043601536 is an apocalyptic number.

It is an amenable number.

40043601536 is a deficient number, since it is larger than the sum of its proper divisors (39847735264).

40043601536 is an equidigital number, since it uses as much as digits as its factorization.

40043601536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458736 (or 458724 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 40043601536 in words is "forty billion, forty-three million, six hundred one thousand, five hundred thirty-six".