22245777912461 has 2 divisors, whose sum is σ = 22245777912462. Its totient is φ = 22245777912460.

The previous prime is 22245777912439. The next prime is 22245777912467. The reversal of 22245777912461 is 16421977754222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21958502280100 + 287275632361 = 4685990^2 + 535981^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22245777912461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22245777912461.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22245777912467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11122888956230 + 11122888956231.

It is an arithmetic number, because the mean of its divisors is an integer number (11122888956231).

Almost surely, 2^{22245777912461} is an apocalyptic number.

It is an amenable number.

22245777912461 is a deficient number, since it is larger than the sum of its proper divisors (1).

22245777912461 is an equidigital number, since it uses as much as digits as its factorization.

22245777912461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23708160, while the sum is 59.

The spelling of 22245777912461 in words is "twenty-two trillion, two hundred forty-five billion, seven hundred seventy-seven million, nine hundred twelve thousand, four hundred sixty-one".