22163995868866 has 4 divisors (see below), whose sum is σ = 33245993803302. Its totient is φ = 11081997934432.

The previous prime is 22163995868851. The next prime is 22163995868873. The reversal of 22163995868866 is 66886859936122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14098560588025 + 8065435280841 = 3754805^2 + 2839971^2 .

It is a super-3 number, since 3×22163995868866³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5540998967215 + ... + 5540998967218.

Almost surely, 2^{22163995868866} is an apocalyptic number.

22163995868866 is a deficient number, since it is larger than the sum of its proper divisors (11081997934436).

22163995868866 is a wasteful number, since it uses less digits than its factorization.

22163995868866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11081997934435.

The product of its digits is 3224862720, while the sum is 79.

The spelling of 22163995868866 in words is "twenty-two trillion, one hundred sixty-three billion, nine hundred ninety-five million, eight hundred sixty-eight thousand, eight hundred sixty-six".