22727362891 has 2 divisors, whose sum is σ = 22727362892. Its totient is φ = 22727362890.

The previous prime is 22727362871. The next prime is 22727362937. The reversal of 22727362891 is 19826372722.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22727362891 is a prime.

It is a super-4 number, since 4×22727362891⁴ (a number of 43 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (22727362811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11363681445 + 11363681446.

It is an arithmetic number, because the mean of its divisors is an integer number (11363681446).

Almost surely, 2^22727362891 is an apocalyptic number.

22727362891 is a deficient number, since it is larger than the sum of its proper divisors (1).

22727362891 is an equidigital number, since it uses as much as digits as its factorization.

22727362891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 49.

The spelling of 22727362891 in words is "twenty-two billion, seven hundred twenty-seven million, three hundred sixty-two thousand, eight hundred ninety-one".