26540467567 has 4 divisors (see below), whose sum is σ = 27041231160. Its totient is φ = 26039703976.

The previous prime is 26540467537. The next prime is 26540467621. The reversal of 26540467567 is 76576404562.

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 26540467567 - 2¹⁹ = 26539943279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26540467537) 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, 250381717 + ... + 250381822.

It is an arithmetic number, because the mean of its divisors is an integer number (6760307790).

Almost surely, 2^26540467567 is an apocalyptic number.

26540467567 is a deficient number, since it is larger than the sum of its proper divisors (500763593).

26540467567 is an equidigital number, since it uses as much as digits as its factorization.

26540467567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500763592.

The product of its (nonzero) digits is 8467200, while the sum is 52.

The spelling of 26540467567 in words is "twenty-six billion, five hundred forty million, four hundred sixty-seven thousand, five hundred sixty-seven".