13810608921 has 8 divisors (see below), whose sum is σ = 18805935744. Its totient is φ = 9011177360.

The previous prime is 13810608899. The next prime is 13810608941. The reversal of 13810608921 is 12980601831.

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 13810608921 - 2¹³ = 13810600729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13810608921.

It is not an unprimeable number, because it can be changed into a prime (13810608941) 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, 48973650 + ... + 48973931.

It is an arithmetic number, because the mean of its divisors is an integer number (2350741968).

Almost surely, 2^13810608921 is an apocalyptic number.

It is an amenable number.

13810608921 is a deficient number, since it is larger than the sum of its proper divisors (4995326823).

13810608921 is an equidigital number, since it uses as much as digits as its factorization.

13810608921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97947631.

The product of its (nonzero) digits is 20736, while the sum is 39.

The spelling of 13810608921 in words is "thirteen billion, eight hundred ten million, six hundred eight thousand, nine hundred twenty-one".