12698826193 has 4 divisors (see below), whose sum is σ = 12699244980. Its totient is φ = 12698407408.

The previous prime is 12698826181. The next prime is 12698826247. The reversal of 12698826193 is 39162889621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39162889621 = 277 ⋅141382273.

It can be written as a sum of positive squares in 2 ways, for example, as 7881355729 + 4817470464 = 88777^2 + 69408^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12698826193 is a prime.

It is a super-2 number, since 2×12698826193² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12698826163) 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 in 3 ways as a sum of consecutive naturals, for example, 160030 + ... + 225847.

It is an arithmetic number, because the mean of its divisors is an integer number (3174811245).

Almost surely, 2^12698826193 is an apocalyptic number.

It is an amenable number.

12698826193 is a deficient number, since it is larger than the sum of its proper divisors (418787).

12698826193 is an equidigital number, since it uses as much as digits as its factorization.

12698826193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418786.

The product of its digits is 2239488, while the sum is 55.

It can be divided in two parts, 126988 and 26193, that added together give a triangular number (153181 = T₅₅₃).

The spelling of 12698826193 in words is "twelve billion, six hundred ninety-eight million, eight hundred twenty-six thousand, one hundred ninety-three".