26620680806064 has 60 divisors (see below), whose sum is σ = 74501431170192. Its totient is φ = 8873500944000.

The previous prime is 26620680806039. The next prime is 26620680806113. The reversal of 26620680806064 is 46060808602662.

26620680806064 is a `hidden beast` number, since 2 + 6 + 6 + 20 + 6 + 8 + 0 + 8 + 0 + 606 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 26620680806064.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24539629 + ... + 25601459.

Almost surely, 2^{26620680806064} is an apocalyptic number.

26620680806064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

26620680806064 is an abundant number, since it is smaller than the sum of its proper divisors (47880750364128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26620680806064 is a wasteful number, since it uses less digits than its factorization.

26620680806064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235946 (or 1235937 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 54.

The spelling of 26620680806064 in words is "twenty-six trillion, six hundred twenty billion, six hundred eighty million, eight hundred six thousand, sixty-four".