22161876723 has 16 divisors (see below), whose sum is σ = 37522754560. Its totient is φ = 12663929448.

The previous prime is 22161876721. The next prime is 22161876731. The reversal of 22161876723 is 32767816122.

22161876723 is a `hidden beast` number, since 2 + 2 + 1 + 618 + 7 + 6 + 7 + 23 = 666.

It is not a de Polignac number, because 22161876723 - 2¹ = 22161876721 is a prime.

It is a super-2 number, since 2×22161876723² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22161876721) 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, 58629115 + ... + 58629492.

It is an arithmetic number, because the mean of its divisors is an integer number (2345172160).

Almost surely, 2^22161876723 is an apocalyptic number.

22161876723 is a deficient number, since it is larger than the sum of its proper divisors (15360877837).

22161876723 is a wasteful number, since it uses less digits than its factorization.

22161876723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117258623 (or 117258617 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The spelling of 22161876723 in words is "twenty-two billion, one hundred sixty-one million, eight hundred seventy-six thousand, seven hundred twenty-three".