22209368749 has 2 divisors, whose sum is σ = 22209368750. Its totient is φ = 22209368748.

The previous prime is 22209368743. The next prime is 22209368771. The reversal of 22209368749 is 94786390222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17681020900 + 4528347849 = 132970^2 + 67293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22209368749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22209368696 and 22209368705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22209368743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11104684374 + 11104684375.

It is an arithmetic number, because the mean of its divisors is an integer number (11104684375).

Almost surely, 2^22209368749 is an apocalyptic number.

It is an amenable number.

22209368749 is a deficient number, since it is larger than the sum of its proper divisors (1).

22209368749 is an equidigital number, since it uses as much as digits as its factorization.

22209368749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 22209368749 in words is "twenty-two billion, two hundred nine million, three hundred sixty-eight thousand, seven hundred forty-nine".