22921440809 has 16 divisors (see below), whose sum is σ = 24487132032. Its totient is φ = 21403713408.

The previous prime is 22921440797. The next prime is 22921440847. The reversal of 22921440809 is 90804412922.

It is a cyclic number.

It is not a de Polignac number, because 22921440809 - 2⁴ = 22921440793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22921440109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2326157 + ... + 2335989.

It is an arithmetic number, because the mean of its divisors is an integer number (1530445752).

Almost surely, 2^22921440809 is an apocalyptic number.

It is an amenable number.

22921440809 is a deficient number, since it is larger than the sum of its proper divisors (1565691223).

22921440809 is a wasteful number, since it uses less digits than its factorization.

22921440809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12256.

The product of its (nonzero) digits is 82944, while the sum is 41.

The spelling of 22921440809 in words is "twenty-two billion, nine hundred twenty-one million, four hundred forty thousand, eight hundred nine".