12698865826 has 32 divisors (see below), whose sum is σ = 19803139200. Its totient is φ = 6103418880.

The previous prime is 12698865811. The next prime is 12698865857. The reversal of 12698865826 is 62856889621.

It is a super-2 number, since 2×12698865826² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1941730 + ... + 1948258.

It is an arithmetic number, because the mean of its divisors is an integer number (618848100).

Almost surely, 2^12698865826 is an apocalyptic number.

12698865826 is a deficient number, since it is larger than the sum of its proper divisors (7104273374).

12698865826 is a wasteful number, since it uses less digits than its factorization.

12698865826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6954.

The product of its digits is 19906560, while the sum is 61.

The spelling of 12698865826 in words is "twelve billion, six hundred ninety-eight million, eight hundred sixty-five thousand, eight hundred twenty-six".