40400013044 has 24 divisors (see below), whose sum is σ = 74478200160. Its totient is φ = 19122159456.

The previous prime is 40400013019. The next prime is 40400013077. The reversal of 40400013044 is 44031000404.

It is a super-2 number, since 2×40400013044² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104027 + ... + 302690.

It is an arithmetic number, because the mean of its divisors is an integer number (3103258340).

Almost surely, 2^40400013044 is an apocalyptic number.

It is an amenable number.

40400013044 is a deficient number, since it is larger than the sum of its proper divisors (34078187116).

40400013044 is a wasteful number, since it uses less digits than its factorization.

40400013044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408047 (or 408045 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 40400013044 its reverse (44031000404), we get a palindrome (84431013448).

The spelling of 40400013044 in words is "forty billion, four hundred million, thirteen thousand, forty-four".