22666740891 has 8 divisors (see below), whose sum is σ = 30734564160. Its totient is φ = 14855039112.

The previous prime is 22666740871. The next prime is 22666740911. The reversal of 22666740891 is 19804766622.

It is an interprime number because it is at equal distance from previous prime (22666740871) and next prime (22666740911).

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

It is not a de Polignac number, because 22666740891 - 2⁷ = 22666740763 is a prime.

It is a super-3 number, since 3×22666740891³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22666740871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64030165 + ... + 64030518.

It is an arithmetic number, because the mean of its divisors is an integer number (3841820520).

Almost surely, 2^22666740891 is an apocalyptic number.

22666740891 is a deficient number, since it is larger than the sum of its proper divisors (8067823269).

22666740891 is a wasteful number, since it uses less digits than its factorization.

22666740891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128060745.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 22666740891 in words is "twenty-two billion, six hundred sixty-six million, seven hundred forty thousand, eight hundred ninety-one".