17221492641 has 4 divisors (see below), whose sum is σ = 22961990192. Its totient is φ = 11480995092.

The previous prime is 17221492621. The next prime is 17221492649. The reversal of 17221492641 is 14629412271.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 17221492641 - 2⁶ = 17221492577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 17221492641.

It is not an unprimeable number, because it can be changed into a prime (17221492649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2870248771 + ... + 2870248776.

It is an arithmetic number, because the mean of its divisors is an integer number (5740497548).

Almost surely, 2^17221492641 is an apocalyptic number.

It is an amenable number.

17221492641 is a deficient number, since it is larger than the sum of its proper divisors (5740497551).

17221492641 is an equidigital number, since it uses as much as digits as its factorization.

17221492641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5740497550.

The product of its digits is 48384, while the sum is 39.

The spelling of 17221492641 in words is "seventeen billion, two hundred twenty-one million, four hundred ninety-two thousand, six hundred forty-one".