13155570697 has 2 divisors, whose sum is σ = 13155570698. Its totient is φ = 13155570696.

The previous prime is 13155570671. The next prime is 13155570737. The reversal of 13155570697 is 79607555131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7706030656 + 5449540041 = 87784^2 + 73821^2 .

It is a cyclic number.

It is not a de Polignac number, because 13155570697 - 2¹¹ = 13155568649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13155570697.

It is not a weakly prime, because it can be changed into another prime (13155570497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6577785348 + 6577785349.

It is an arithmetic number, because the mean of its divisors is an integer number (6577785349).

Almost surely, 2^13155570697 is an apocalyptic number.

It is an amenable number.

13155570697 is a deficient number, since it is larger than the sum of its proper divisors (1).

13155570697 is an equidigital number, since it uses as much as digits as its factorization.

13155570697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 992250, while the sum is 49.

The spelling of 13155570697 in words is "thirteen billion, one hundred fifty-five million, five hundred seventy thousand, six hundred ninety-seven".