26686813616 has 40 divisors (see below), whose sum is σ = 52022191200. Its totient is φ = 13261939200.

The previous prime is 26686813513. The next prime is 26686813649. The reversal of 26686813616 is 61631868662.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2196005 + ... + 2208123.

It is an arithmetic number, because the mean of its divisors is an integer number (1300554780).

Almost surely, 2^26686813616 is an apocalyptic number.

It is an amenable number.

26686813616 is a deficient number, since it is larger than the sum of its proper divisors (25335377584).

26686813616 is a wasteful number, since it uses less digits than its factorization.

26686813616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12957 (or 12951 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 53.

The spelling of 26686813616 in words is "twenty-six billion, six hundred eighty-six million, eight hundred thirteen thousand, six hundred sixteen".