22711474781 has 2 divisors, whose sum is σ = 22711474782. Its totient is φ = 22711474780.

The previous prime is 22711474771. The next prime is 22711474813. The reversal of 22711474781 is 18747411722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11630544025 + 11080930756 = 107845^2 + 105266^2 .

It is a cyclic number.

It is not a de Polignac number, because 22711474781 - 2¹⁸ = 22711212637 is a prime.

It is a super-2 number, since 2×22711474781² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22711474771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11355737390 + 11355737391.

It is an arithmetic number, because the mean of its divisors is an integer number (11355737391).

Almost surely, 2^22711474781 is an apocalyptic number.

It is an amenable number.

22711474781 is a deficient number, since it is larger than the sum of its proper divisors (1).

22711474781 is an equidigital number, since it uses as much as digits as its factorization.

22711474781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 175616, while the sum is 44.

The spelling of 22711474781 in words is "twenty-two billion, seven hundred eleven million, four hundred seventy-four thousand, seven hundred eighty-one".