13331502161 has 2 divisors, whose sum is σ = 13331502162. Its totient is φ = 13331502160.

The previous prime is 13331502137. The next prime is 13331502169. The reversal of 13331502161 is 16120513331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13148062225 + 183439936 = 114665^2 + 13544^2 .

It is a cyclic number.

It is not a de Polignac number, because 13331502161 - 2⁶ = 13331502097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13331502161.

It is not a weakly prime, because it can be changed into another prime (13331502169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6665751080 + 6665751081.

It is an arithmetic number, because the mean of its divisors is an integer number (6665751081).

Almost surely, 2^13331502161 is an apocalyptic number.

It is an amenable number.

13331502161 is a deficient number, since it is larger than the sum of its proper divisors (1).

13331502161 is an equidigital number, since it uses as much as digits as its factorization.

13331502161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The spelling of 13331502161 in words is "thirteen billion, three hundred thirty-one million, five hundred two thousand, one hundred sixty-one".