22759779649 has 2 divisors, whose sum is σ = 22759779650. Its totient is φ = 22759779648.

The previous prime is 22759779613. The next prime is 22759779689. The reversal of 22759779649 is 94697795722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14010983424 + 8748796225 = 118368^2 + 93535^2 .

It is a cyclic number.

It is not a de Polignac number, because 22759779649 - 2⁹ = 22759779137 is a prime.

It is not a weakly prime, because it can be changed into another prime (22759779689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11379889824 + 11379889825.

It is an arithmetic number, because the mean of its divisors is an integer number (11379889825).

Almost surely, 2^22759779649 is an apocalyptic number.

It is an amenable number.

22759779649 is a deficient number, since it is larger than the sum of its proper divisors (1).

22759779649 is an equidigital number, since it uses as much as digits as its factorization.

22759779649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120022560, while the sum is 67.

The spelling of 22759779649 in words is "twenty-two billion, seven hundred fifty-nine million, seven hundred seventy-nine thousand, six hundred forty-nine".