40413365621 has 12 divisors (see below), whose sum is σ = 41315016960. Its totient is φ = 39531002520.

The previous prime is 40413365611. The next prime is 40413365683. The reversal of 40413365621 is 12656331404.

It is not a de Polignac number, because 40413365621 - 2²² = 40409171317 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 (40413365611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4941866 + ... + 4950036.

It is an arithmetic number, because the mean of its divisors is an integer number (3442918080).

Almost surely, 2^40413365621 is an apocalyptic number.

It is an amenable number.

40413365621 is a deficient number, since it is larger than the sum of its proper divisors (901651339).

40413365621 is an equidigital number, since it uses as much as digits as its factorization.

40413365621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10504 (or 10457 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 40413365621 in words is "forty billion, four hundred thirteen million, three hundred sixty-five thousand, six hundred twenty-one".