26680565680538 has 64 divisors (see below), whose sum is σ = 52066727424000. Its totient is φ = 9942837273600.

The previous prime is 26680565680507. The next prime is 26680565680543. The reversal of 26680565680538 is 83508656508662.

It is a Smith number, since the sum of its digits (68) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 31 ways as a sum of consecutive naturals, for example, 273567203 + ... + 273664713.

It is an arithmetic number, because the mean of its divisors is an integer number (813542616000).

Almost surely, 2^{26680565680538} is an apocalyptic number.

26680565680538 is a deficient number, since it is larger than the sum of its proper divisors (25386161743462).

26680565680538 is a wasteful number, since it uses less digits than its factorization.

26680565680538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174803.

The product of its (nonzero) digits is 497664000, while the sum is 68.

The spelling of 26680565680538 in words is "twenty-six trillion, six hundred eighty billion, five hundred sixty-five million, six hundred eighty thousand, five hundred thirty-eight".