22154666164 has 6 divisors (see below), whose sum is σ = 38770665794. Its totient is φ = 11077333080.

The previous prime is 22154666147. The next prime is 22154666173. The reversal of 22154666164 is 46166645122.

It can be written as a sum of positive squares in only one way, i.e., 21182473764 + 972192400 = 145542^2 + 31180^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22154666164.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2769333267 + ... + 2769333274.

Almost surely, 2^22154666164 is an apocalyptic number.

It is an amenable number.

22154666164 is a deficient number, since it is larger than the sum of its proper divisors (16615999630).

22154666164 is a wasteful number, since it uses less digits than its factorization.

22154666164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5538666545 (or 5538666543 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The spelling of 22154666164 in words is "twenty-two billion, one hundred fifty-four million, six hundred sixty-six thousand, one hundred sixty-four".