26662664602406 has 32 divisors (see below), whose sum is σ = 46678555022400. Its totient is φ = 11417466536448.

The previous prime is 26662664602393. The next prime is 26662664602423. The reversal of 26662664602406 is 60420646626662.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15133445 + ... + 16803168.

It is an arithmetic number, because the mean of its divisors is an integer number (1458704844450).

Almost surely, 2^{26662664602406} is an apocalyptic number.

26662664602406 is a deficient number, since it is larger than the sum of its proper divisors (20015890419994).

26662664602406 is a wasteful number, since it uses less digits than its factorization.

26662664602406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31937853 (or 31937839 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 56.

The spelling of 26662664602406 in words is "twenty-six trillion, six hundred sixty-two billion, six hundred sixty-four million, six hundred two thousand, four hundred six".