26517078959 has 4 divisors (see below), whose sum is σ = 30305233104. Its totient is φ = 22728924816.

The previous prime is 26517078901. The next prime is 26517078989. The reversal of 26517078959 is 95987071562.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26517078959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26517078898 and 26517078907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26517078989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1894077062 + ... + 1894077075.

It is an arithmetic number, because the mean of its divisors is an integer number (7576308276).

Almost surely, 2^26517078959 is an apocalyptic number.

26517078959 is a deficient number, since it is larger than the sum of its proper divisors (3788154145).

26517078959 is an equidigital number, since it uses as much as digits as its factorization.

26517078959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788154144.

The product of its (nonzero) digits is 9525600, while the sum is 59.

The spelling of 26517078959 in words is "twenty-six billion, five hundred seventeen million, seventy-eight thousand, nine hundred fifty-nine".