22144164251 has 16 divisors (see below), whose sum is σ = 25680499200. Its totient is φ = 18882684000.

The previous prime is 22144164233. The next prime is 22144164293. The reversal of 22144164251 is 15246144122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22144164251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22144164221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503411 + ... + 545628.

It is an arithmetic number, because the mean of its divisors is an integer number (1605031200).

Almost surely, 2^22144164251 is an apocalyptic number.

22144164251 is a deficient number, since it is larger than the sum of its proper divisors (3536334949).

22144164251 is a wasteful number, since it uses less digits than its factorization.

22144164251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049170.

The product of its digits is 15360, while the sum is 32.

The spelling of 22144164251 in words is "twenty-two billion, one hundred forty-four million, one hundred sixty-four thousand, two hundred fifty-one".