22694138145 has 144 divisors (see below), whose sum is σ = 47962357248. Its totient is φ = 10090293120.

The previous prime is 22694138119. The next prime is 22694138147. The reversal of 22694138145 is 54183149622.

22694138145 is a `hidden beast` number, since 2 + 269 + 4 + 1 + 381 + 4 + 5 = 666.

It is not a de Polignac number, because 22694138145 - 2⁸ = 22694137889 is a prime.

It is a super-2 number, since 2×22694138145² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 22694138145.

It is not an unprimeable number, because it can be changed into a prime (22694138147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 8495160 + ... + 8497830.

Almost surely, 2^22694138145 is an apocalyptic number.

It is an amenable number.

22694138145 is an abundant number, since it is smaller than the sum of its proper divisors (25268219103).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22694138145 is an frugal number, since it uses more digits than its factorization.

22694138145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2744 (or 2723 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

It can be divided in two parts, 2269 and 4138145, that added together give a palindrome (4140414).

The spelling of 22694138145 in words is "twenty-two billion, six hundred ninety-four million, one hundred thirty-eight thousand, one hundred forty-five".