22887166644 has 18 divisors (see below), whose sum is σ = 57853671330. Its totient is φ = 7629055536.

The previous prime is 22887166637. The next prime is 22887166693. The reversal of 22887166644 is 44666178822.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15841243044 + 7045923600 = 125862^2 + 83940^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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 5 ways as a sum of consecutive naturals, for example, 317877279 + ... + 317877350.

Almost surely, 2^22887166644 is an apocalyptic number.

It is an amenable number.

22887166644 is an abundant number, since it is smaller than the sum of its proper divisors (34966504686).

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

22887166644 is a wasteful number, since it uses less digits than its factorization.

22887166644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635754639 (or 635754634 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 54.

The spelling of 22887166644 in words is "twenty-two billion, eight hundred eighty-seven million, one hundred sixty-six thousand, six hundred forty-four".