22456667861 has 2 divisors, whose sum is σ = 22456667862. Its totient is φ = 22456667860.

The previous prime is 22456667839. The next prime is 22456667903. The reversal of 22456667861 is 16876665422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17274107761 + 5182560100 = 131431^2 + 71990^2 .

It is a cyclic number.

It is not a de Polignac number, because 22456667861 - 2³⁴ = 5276798677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22456667801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11228333930 + 11228333931.

It is an arithmetic number, because the mean of its divisors is an integer number (11228333931).

Almost surely, 2^22456667861 is an apocalyptic number.

It is an amenable number.

22456667861 is a deficient number, since it is larger than the sum of its proper divisors (1).

22456667861 is an equidigital number, since it uses as much as digits as its factorization.

22456667861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 53.

The spelling of 22456667861 in words is "twenty-two billion, four hundred fifty-six million, six hundred sixty-seven thousand, eight hundred sixty-one".