22004565660 has 576 divisors, whose sum is σ = 86046105600. Its totient is φ = 4419878400.

The previous prime is 22004565623. The next prime is 22004565697. The reversal of 22004565660 is 6656540022.

It is an interprime number because it is at equal distance from previous prime (22004565623) and next prime (22004565697).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 58059351 + ... + 58059729.

It is an arithmetic number, because the mean of its divisors is an integer number (149385600).

Almost surely, 2^22004565660 is an apocalyptic number.

22004565660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22004565660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43023052800).

22004565660 is an abundant number, since it is smaller than the sum of its proper divisors (64041539940).

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

22004565660 is a wasteful number, since it uses less digits than its factorization.

22004565660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 22004565660 in words is "twenty-two billion, four million, five hundred sixty-five thousand, six hundred sixty".