13247651969 has 2 divisors, whose sum is σ = 13247651970. Its totient is φ = 13247651968.

The previous prime is 13247651959. The next prime is 13247651981. The reversal of 13247651969 is 96915674231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11323513744 + 1924138225 = 106412^2 + 43865^2 .

It is a cyclic number.

It is not a de Polignac number, because 13247651969 - 2²⁰ = 13246603393 is a prime.

It is a super-2 number, since 2×13247651969² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13247651969.

It is not a weakly prime, because it can be changed into another prime (13247651929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6623825984 + 6623825985.

It is an arithmetic number, because the mean of its divisors is an integer number (6623825985).

Almost surely, 2^13247651969 is an apocalyptic number.

It is an amenable number.

13247651969 is a deficient number, since it is larger than the sum of its proper divisors (1).

13247651969 is an equidigital number, since it uses as much as digits as its factorization.

13247651969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 53.

The spelling of 13247651969 in words is "thirteen billion, two hundred forty-seven million, six hundred fifty-one thousand, nine hundred sixty-nine".