26543313817 has 16 divisors (see below), whose sum is σ = 28350812160. Its totient is φ = 24763511808.

The previous prime is 26543313793. The next prime is 26543313893. The reversal of 26543313817 is 71831334562.

It is a cyclic number.

It is not a de Polignac number, because 26543313817 - 2⁷ = 26543313689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26543317817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2795484 + ... + 2804962.

It is an arithmetic number, because the mean of its divisors is an integer number (1771925760).

Almost surely, 2^26543313817 is an apocalyptic number.

It is an amenable number.

26543313817 is a deficient number, since it is larger than the sum of its proper divisors (1807498343).

26543313817 is a wasteful number, since it uses less digits than its factorization.

26543313817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10920.

The product of its digits is 362880, while the sum is 43.

The spelling of 26543313817 in words is "twenty-six billion, five hundred forty-three million, three hundred thirteen thousand, eight hundred seventeen".