13322653649 has 2 divisors, whose sum is σ = 13322653650. Its totient is φ = 13322653648.

The previous prime is 13322653633. The next prime is 13322653657. The reversal of 13322653649 is 94635622331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11208033424 + 2114620225 = 105868^2 + 45985^2 .

It is a cyclic number.

It is not a de Polignac number, because 13322653649 - 2⁴ = 13322653633 is a prime.

It is not a weakly prime, because it can be changed into another prime (13322653609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6661326824 + 6661326825.

It is an arithmetic number, because the mean of its divisors is an integer number (6661326825).

Almost surely, 2^13322653649 is an apocalyptic number.

It is an amenable number.

13322653649 is a deficient number, since it is larger than the sum of its proper divisors (1).

13322653649 is an equidigital number, since it uses as much as digits as its factorization.

13322653649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 44.

The spelling of 13322653649 in words is "thirteen billion, three hundred twenty-two million, six hundred fifty-three thousand, six hundred forty-nine".