40639344393604 has 72 divisors (see below), whose sum is σ = 82722824795520. Its totient is φ = 17321183040000.

The previous prime is 40639344393581. The next prime is 40639344393631.

40639344393604 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×40639344393604² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2519772 + ... + 9360979.

It is an arithmetic number, because the mean of its divisors is an integer number (1148928122160).

Almost surely, 2^{40639344393604} is an apocalyptic number.

40639344393604 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40639344393604 is an abundant number, since it is smaller than the sum of its proper divisors (42083480401916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40639344393604 is a wasteful number, since it uses less digits than its factorization.

40639344393604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11881069 (or 11881050 counting only the distinct ones).

The product of its (nonzero) digits is 60466176, while the sum is 58.

The spelling of 40639344393604 in words is "forty trillion, six hundred thirty-nine billion, three hundred forty-four million, three hundred ninety-three thousand, six hundred four".