115853685569 has 2 divisors, whose sum is σ = 115853685570. Its totient is φ = 115853685568.

The previous prime is 115853685533. The next prime is 115853685583. The reversal of 115853685569 is 965586358511.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111973890625 + 3879794944 = 334625^2 + 62288^2 .

It is a cyclic number.

It is not a de Polignac number, because 115853685569 - 2¹² = 115853681473 is a prime.

It is a super-2 number, since 2×115853685569² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (115853685599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57926842784 + 57926842785.

It is an arithmetic number, because the mean of its divisors is an integer number (57926842785).

Almost surely, 2^115853685569 is an apocalyptic number.

It is an amenable number.

115853685569 is a deficient number, since it is larger than the sum of its proper divisors (1).

115853685569 is an equidigital number, since it uses as much as digits as its factorization.

115853685569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880000, while the sum is 62.

The spelling of 115853685569 in words is "one hundred fifteen billion, eight hundred fifty-three million, six hundred eighty-five thousand, five hundred sixty-nine".