13621653313 has 2 divisors, whose sum is σ = 13621653314. Its totient is φ = 13621653312.

The previous prime is 13621653271. The next prime is 13621653319. The reversal of 13621653313 is 31335612631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13602090384 + 19562929 = 116628^2 + 4423^2 .

It is an emirp because it is prime and its reverse (31335612631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13621653313 - 2³³ = 5031718721 is a prime.

It is not a weakly prime, because it can be changed into another prime (13621653319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6810826656 + 6810826657.

It is an arithmetic number, because the mean of its divisors is an integer number (6810826657).

Almost surely, 2^13621653313 is an apocalyptic number.

It is an amenable number.

13621653313 is a deficient number, since it is larger than the sum of its proper divisors (1).

13621653313 is an equidigital number, since it uses as much as digits as its factorization.

13621653313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 34.

The spelling of 13621653313 in words is "thirteen billion, six hundred twenty-one million, six hundred fifty-three thousand, three hundred thirteen".