13662036649 has 2 divisors, whose sum is σ = 13662036650. Its totient is φ = 13662036648.

The previous prime is 13662036623. The next prime is 13662036653. The reversal of 13662036649 is 94663026631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8910416025 + 4751620624 = 94395^2 + 68932^2 .

It is an emirp because it is prime and its reverse (94663026631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13662036649 - 2⁵ = 13662036617 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13662036599 and 13662036608.

It is not a weakly prime, because it can be changed into another prime (13662036449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6831018324 + 6831018325.

It is an arithmetic number, because the mean of its divisors is an integer number (6831018325).

Almost surely, 2^13662036649 is an apocalyptic number.

It is an amenable number.

13662036649 is a deficient number, since it is larger than the sum of its proper divisors (1).

13662036649 is an equidigital number, since it uses as much as digits as its factorization.

13662036649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 839808, while the sum is 46.

The spelling of 13662036649 in words is "thirteen billion, six hundred sixty-two million, thirty-six thousand, six hundred forty-nine".