22426400968261 has 2 divisors, whose sum is σ = 22426400968262. Its totient is φ = 22426400968260.

The previous prime is 22426400968259. The next prime is 22426400968271. The reversal of 22426400968261 is 16286900462422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21063097197025 + 1363303771236 = 4589455^2 + 1167606^2 .

It is a cyclic number.

It is not a de Polignac number, because 22426400968261 - 2¹ = 22426400968259 is a prime.

Together with 22426400968259, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 22426400968199 and 22426400968208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22426400968271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11213200484130 + 11213200484131.

It is an arithmetic number, because the mean of its divisors is an integer number (11213200484131).

Almost surely, 2^{22426400968261} is an apocalyptic number.

It is an amenable number.

22426400968261 is a deficient number, since it is larger than the sum of its proper divisors (1).

22426400968261 is an equidigital number, since it uses as much as digits as its factorization.

22426400968261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 22426400968261 in words is "twenty-two trillion, four hundred twenty-six billion, four hundred million, nine hundred sixty-eight thousand, two hundred sixty-one".