22646551665 has 16 divisors (see below), whose sum is σ = 36318175488. Its totient is φ = 12050263296.

The previous prime is 22646551657. The next prime is 22646551673. The reversal of 22646551665 is 56615564622.

It is an interprime number because it is at equal distance from previous prime (22646551657) and next prime (22646551673).

It is not a de Polignac number, because 22646551665 - 2³ = 22646551657 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1736889 + ... + 1749878.

It is an arithmetic number, because the mean of its divisors is an integer number (2269885968).

Almost surely, 2^22646551665 is an apocalyptic number.

It is an amenable number.

22646551665 is a deficient number, since it is larger than the sum of its proper divisors (13671623823).

22646551665 is a wasteful number, since it uses less digits than its factorization.

22646551665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3487208.

The product of its digits is 2592000, while the sum is 48.

The spelling of 22646551665 in words is "twenty-two billion, six hundred forty-six million, five hundred fifty-one thousand, six hundred sixty-five".