22744152081 has 60 divisors (see below), whose sum is σ = 40591355508. Its totient is φ = 12645315648.

The previous prime is 22744152031. The next prime is 22744152089. The reversal of 22744152081 is 18025144722.

22744152081 is a `hidden beast` number, since 2 + 2 + 7 + 441 + 5 + 208 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18655189056 + 4088963025 = 136584^2 + 63945^2 .

It is not a de Polignac number, because 22744152081 - 2¹⁹ = 22743627793 is a prime.

It is a super-2 number, since 2×22744152081² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22744152089) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 69415 + ... + 224291.

Almost surely, 2^22744152081 is an apocalyptic number.

22744152081 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22744152081 is a deficient number, since it is larger than the sum of its proper divisors (17847203427).

22744152081 is a wasteful number, since it uses less digits than its factorization.

22744152081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154940 (or 154924 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The spelling of 22744152081 in words is "twenty-two billion, seven hundred forty-four million, one hundred fifty-two thousand, eighty-one".