22721290689 has 8 divisors (see below), whose sum is σ = 30635448480. Its totient is φ = 14977330016.

The previous prime is 22721290663. The next prime is 22721290717. The reversal of 22721290689 is 98609212722.

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 22721290689 - 2⁸ = 22721290433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22721290489) 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, 42548967 + ... + 42549500.

It is an arithmetic number, because the mean of its divisors is an integer number (3829431060).

Almost surely, 2^22721290689 is an apocalyptic number.

It is an amenable number.

22721290689 is a deficient number, since it is larger than the sum of its proper divisors (7914157791).

22721290689 is an equidigital number, since it uses as much as digits as its factorization.

22721290689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85098559.

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 22721290689 in words is "twenty-two billion, seven hundred twenty-one million, two hundred ninety thousand, six hundred eighty-nine".