22330781257 has 2 divisors, whose sum is σ = 22330781258. Its totient is φ = 22330781256.

The previous prime is 22330781233. The next prime is 22330781287. The reversal of 22330781257 is 75218703322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19545158416 + 2785622841 = 139804^2 + 52779^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22330781257 is a prime.

It is not a weakly prime, because it can be changed into another prime (22330781287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11165390628 + 11165390629.

It is an arithmetic number, because the mean of its divisors is an integer number (11165390629).

Almost surely, 2^22330781257 is an apocalyptic number.

It is an amenable number.

22330781257 is a deficient number, since it is larger than the sum of its proper divisors (1).

22330781257 is an equidigital number, since it uses as much as digits as its factorization.

22330781257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 40.

The spelling of 22330781257 in words is "twenty-two billion, three hundred thirty million, seven hundred eighty-one thousand, two hundred fifty-seven".