22164451771 has 64 divisors (see below), whose sum is σ = 28665492480. Its totient is φ = 16641884160.

The previous prime is 22164451753. The next prime is 22164451823. The reversal of 22164451771 is 17715446122.

It is not a de Polignac number, because 22164451771 - 2¹⁵ = 22164419003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22164451711) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86242875 + ... + 86243131.

It is an arithmetic number, because the mean of its divisors is an integer number (447898320).

Almost surely, 2^22164451771 is an apocalyptic number.

22164451771 is a deficient number, since it is larger than the sum of its proper divisors (6501040709).

22164451771 is a wasteful number, since it uses less digits than its factorization.

22164451771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644.

The product of its digits is 94080, while the sum is 40.

Adding to 22164451771 its reverse (17715446122), we get a palindrome (39879897893).

The spelling of 22164451771 in words is "twenty-two billion, one hundred sixty-four million, four hundred fifty-one thousand, seven hundred seventy-one".