22518039666 has 8 divisors (see below), whose sum is σ = 45036079344. Its totient is φ = 7506013220.

The previous prime is 22518039641. The next prime is 22518039703. The reversal of 22518039666 is 66693081522.

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

22518039666 is an admirable number.

It is a super-2 number, since 2×22518039666² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1876503300 + ... + 1876503311.

It is an arithmetic number, because the mean of its divisors is an integer number (5629509918).

Almost surely, 2^22518039666 is an apocalyptic number.

22518039666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22518039666 is a wasteful number, since it uses less digits than its factorization.

22518039666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3753006616.

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 22518039666 in words is "twenty-two billion, five hundred eighteen million, thirty-nine thousand, six hundred sixty-six".