22721564114789 has 2 divisors, whose sum is σ = 22721564114790. Its totient is φ = 22721564114788.

The previous prime is 22721564114783. The next prime is 22721564114833. The reversal of 22721564114789 is 98741146512722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22482609345889 + 238954768900 = 4741583^2 + 488830^2 .

It is a cyclic number.

It is not a de Polignac number, because 22721564114789 - 2²⁸ = 22721295679333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22721564114783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11360782057394 + 11360782057395.

It is an arithmetic number, because the mean of its divisors is an integer number (11360782057395).

Almost surely, 2^{22721564114789} is an apocalyptic number.

It is an amenable number.

22721564114789 is a deficient number, since it is larger than the sum of its proper divisors (1).

22721564114789 is an equidigital number, since it uses as much as digits as its factorization.

22721564114789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13547520, while the sum is 59.

The spelling of 22721564114789 in words is "twenty-two trillion, seven hundred twenty-one billion, five hundred sixty-four million, one hundred fourteen thousand, seven hundred eighty-nine".