26856720671167 has 4 divisors (see below), whose sum is σ = 27103112604040. Its totient is φ = 26610328738296.

The previous prime is 26856720671159. The next prime is 26856720671173. The reversal of 26856720671167 is 76117602765862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26856720671167 - 2³ = 26856720671159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26856720671099 and 26856720671108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26856720611167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123195966273 + ... + 123195966490.

It is an arithmetic number, because the mean of its divisors is an integer number (6775778151010).

Almost surely, 2^{26856720671167} is an apocalyptic number.

26856720671167 is a deficient number, since it is larger than the sum of its proper divisors (246391932873).

26856720671167 is a wasteful number, since it uses less digits than its factorization.

26856720671167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246391932872.

The product of its (nonzero) digits is 71124480, while the sum is 64.

The spelling of 26856720671167 in words is "twenty-six trillion, eight hundred fifty-six billion, seven hundred twenty million, six hundred seventy-one thousand, one hundred sixty-seven".