13804005621 has 32 divisors (see below), whose sum is σ = 21650403328. Its totient is φ = 7658038080.

The previous prime is 13804005619. The next prime is 13804005629. The reversal of 13804005621 is 12650040831.

It is not a de Polignac number, because 13804005621 - 2¹ = 13804005619 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 (13804005629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 340566 + ... + 378936.

It is an arithmetic number, because the mean of its divisors is an integer number (676575104).

Almost surely, 2^13804005621 is an apocalyptic number.

It is an amenable number.

13804005621 is a deficient number, since it is larger than the sum of its proper divisors (7846397707).

13804005621 is a wasteful number, since it uses less digits than its factorization.

13804005621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38881.

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 13804005621 in words is "thirteen billion, eight hundred four million, five thousand, six hundred twenty-one".