6698966556826 has 8 divisors (see below), whose sum is σ = 10186099833204. Its totient is φ = 3303599945760.

The previous prime is 6698966556809. The next prime is 6698966556829. The reversal of 6698966556826 is 6286556698966.

It can be written as a sum of positive squares in 2 ways, for example, as 6675893250625 + 23073306201 = 2583775^2 + 151899^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6698966556826.

It is not an unprimeable number, because it can be changed into a prime (6698966556829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22941666145 + ... + 22941666436.

Almost surely, 2^{6698966556826} is an apocalyptic number.

6698966556826 is a deficient number, since it is larger than the sum of its proper divisors (3487133276378).

6698966556826 is a wasteful number, since it uses less digits than its factorization.

6698966556826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45883332656.

The product of its digits is 12093235200, while the sum is 82.

The spelling of 6698966556826 in words is "six trillion, six hundred ninety-eight billion, nine hundred sixty-six million, five hundred fifty-six thousand, eight hundred twenty-six".