21492220589 has 8 divisors (see below), whose sum is σ = 24617246400. Its totient is φ = 18380871936.

The previous prime is 21492220523. The next prime is 21492220591. The reversal of 21492220589 is 98502229412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-21492220589 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 (21492220289) 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, 3415919 + ... + 3422204.

It is an arithmetic number, because the mean of its divisors is an integer number (3077155800).

Almost surely, 2^21492220589 is an apocalyptic number.

It is an amenable number.

21492220589 is a deficient number, since it is larger than the sum of its proper divisors (3125025811).

21492220589 is an equidigital number, since it uses as much as digits as its factorization.

21492220589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6838579.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 21492220589 in words is "twenty-one billion, four hundred ninety-two million, two hundred twenty thousand, five hundred eighty-nine".