26546591697 has 12 divisors (see below), whose sum is σ = 37001300784. Its totient is φ = 16928260360.

The previous prime is 26546591623. The next prime is 26546591707. The reversal of 26546591697 is 79619564562.

It is not a de Polignac number, because 26546591697 - 2⁷ = 26546591569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26546591697.

It is not an unprimeable number, because it can be changed into a prime (26546091697) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 8362179 + ... + 8365352.

It is an arithmetic number, because the mean of its divisors is an integer number (3083441732).

Almost surely, 2^26546591697 is an apocalyptic number.

It is an amenable number.

26546591697 is a deficient number, since it is larger than the sum of its proper divisors (10454709087).

26546591697 is a wasteful number, since it uses less digits than its factorization.

26546591697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16727580 (or 16727557 counting only the distinct ones).

The product of its digits is 24494400, while the sum is 60.

The spelling of 26546591697 in words is "twenty-six billion, five hundred forty-six million, five hundred ninety-one thousand, six hundred ninety-seven".