13163643331 has 2 divisors, whose sum is σ = 13163643332. Its totient is φ = 13163643330.

The previous prime is 13163643329. The next prime is 13163643343. The reversal of 13163643331 is 13334636131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13163643331 - 2¹ = 13163643329 is a prime.

It is a super-2 number, since 2×13163643331² (a number of 21 digits) contains 22 as substring.

Together with 13163643329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13163643391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6581821665 + 6581821666.

It is an arithmetic number, because the mean of its divisors is an integer number (6581821666).

Almost surely, 2^13163643331 is an apocalyptic number.

13163643331 is a deficient number, since it is larger than the sum of its proper divisors (1).

13163643331 is an equidigital number, since it uses as much as digits as its factorization.

13163643331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 34.

The spelling of 13163643331 in words is "thirteen billion, one hundred sixty-three million, six hundred forty-three thousand, three hundred thirty-one".