40044003637 has 8 divisors (see below), whose sum is σ = 43697290752. Its totient is φ = 36392870400.

The previous prime is 40044003611. The next prime is 40044003673. The reversal of 40044003637 is 73630044004.

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

It is a cyclic number.

It is not a de Polignac number, because 40044003637 - 2²³ = 40035615029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40044003599 and 40044003608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40044003607) 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, 499468 + ... + 574069.

It is an arithmetic number, because the mean of its divisors is an integer number (5462161344).

Almost surely, 2^40044003637 is an apocalyptic number.

It is an amenable number.

40044003637 is a deficient number, since it is larger than the sum of its proper divisors (3653287115).

40044003637 is a wasteful number, since it uses less digits than its factorization.

40044003637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076939.

The product of its (nonzero) digits is 24192, while the sum is 31.

The spelling of 40044003637 in words is "forty billion, forty-four million, three thousand, six hundred thirty-seven".