22644547492156 has 12 divisors (see below), whose sum is σ = 40012695569392. Its totient is φ = 11212348758048.

The previous prime is 22644547492141. The next prime is 22644547492181. The reversal of 22644547492156 is 65129474544622.

It is a happy number.

It is a super-2 number, since 2×22644547492156² (a number of 28 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 22644547492094 and 22644547492103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27481246545 + ... + 27481247368.

Almost surely, 2^{22644547492156} is an apocalyptic number.

It is an amenable number.

22644547492156 is a deficient number, since it is larger than the sum of its proper divisors (17368148077236).

22644547492156 is a wasteful number, since it uses less digits than its factorization.

22644547492156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54962494020 (or 54962494018 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 61.

The spelling of 22644547492156 in words is "twenty-two trillion, six hundred forty-four billion, five hundred forty-seven million, four hundred ninety-two thousand, one hundred fifty-six".