22154664664 has 32 divisors (see below), whose sum is σ = 46059261840. Its totient is φ = 9905212800.

The previous prime is 22154664659. The next prime is 22154664667. The reversal of 22154664664 is 46646645122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22154664667) 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, 2058219 + ... + 2068954.

Almost surely, 2^22154664664 is an apocalyptic number.

It is an amenable number.

22154664664 is an abundant number, since it is smaller than the sum of its proper divisors (23904597176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22154664664 is a wasteful number, since it uses less digits than its factorization.

22154664664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4127251 (or 4127247 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 46.

The spelling of 22154664664 in words is "twenty-two billion, one hundred fifty-four million, six hundred sixty-four thousand, six hundred sixty-four".