13897169969 has 2 divisors, whose sum is σ = 13897169970. Its totient is φ = 13897169968.

The previous prime is 13897169873. The next prime is 13897170061. The reversal of 13897169969 is 96996179831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9818431744 + 4078738225 = 99088^2 + 63865^2 .

It is a cyclic number.

It is not a de Polignac number, because 13897169969 - 2²⁸ = 13628734513 is a prime.

It is a super-2 number, since 2×13897169969² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13897169899 and 13897169908.

It is not a weakly prime, because it can be changed into another prime (13897169569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6948584984 + 6948584985.

It is an arithmetic number, because the mean of its divisors is an integer number (6948584985).

Almost surely, 2^13897169969 is an apocalyptic number.

It is an amenable number.

13897169969 is a deficient number, since it is larger than the sum of its proper divisors (1).

13897169969 is an equidigital number, since it uses as much as digits as its factorization.

13897169969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39680928, while the sum is 68.

The spelling of 13897169969 in words is "thirteen billion, eight hundred ninety-seven million, one hundred sixty-nine thousand, nine hundred sixty-nine".