22400166691 has 12 divisors (see below), whose sum is σ = 26059814040. Its totient is φ = 19198317600.

The previous prime is 22400166683. The next prime is 22400166703. The reversal of 22400166691 is 19666100422.

It is not a de Polignac number, because 22400166691 - 2³ = 22400166683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22400166691.

It is not an unprimeable number, because it can be changed into a prime (22400166611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 861895 + ... + 887503.

It is an arithmetic number, because the mean of its divisors is an integer number (2171651170).

Almost surely, 2^22400166691 is an apocalyptic number.

22400166691 is a deficient number, since it is larger than the sum of its proper divisors (3659647349).

22400166691 is a wasteful number, since it uses less digits than its factorization.

22400166691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43474 (or 43467 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 22400166691 in words is "twenty-two billion, four hundred million, one hundred sixty-six thousand, six hundred ninety-one".