26680622644 has 12 divisors (see below), whose sum is σ = 50282712004. Its totient is φ = 12314133504.

The previous prime is 26680622609. The next prime is 26680622687. The reversal of 26680622644 is 44622608662.

It can be written as a sum of positive squares in 2 ways, for example, as 1506992400 + 25173630244 = 38820^2 + 158662^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26680622594 and 26680622603.

It is a congruent number.

It is an unprimeable number.

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, 256544397 + ... + 256544500.

Almost surely, 2^26680622644 is an apocalyptic number.

It is an amenable number.

26680622644 is a deficient number, since it is larger than the sum of its proper divisors (23602089360).

26680622644 is a wasteful number, since it uses less digits than its factorization.

26680622644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513088914 (or 513088912 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 46.

The spelling of 26680622644 in words is "twenty-six billion, six hundred eighty million, six hundred twenty-two thousand, six hundred forty-four".