26264406217 has 4 divisors (see below), whose sum is σ = 30016464256. Its totient is φ = 22512348180.

The previous prime is 26264406167. The next prime is 26264406239. The reversal of 26264406217 is 71260446262.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 26264406217 - 2¹¹ = 26264404169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26264406217.

It is not an unprimeable number, because it can be changed into a prime (26264406247) 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, 1876029009 + ... + 1876029022.

It is an arithmetic number, because the mean of its divisors is an integer number (7504116064).

Almost surely, 2^26264406217 is an apocalyptic number.

It is an amenable number.

26264406217 is a deficient number, since it is larger than the sum of its proper divisors (3752058039).

26264406217 is an equidigital number, since it uses as much as digits as its factorization.

26264406217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752058038.

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 26264406217 in words is "twenty-six billion, two hundred sixty-four million, four hundred six thousand, two hundred seventeen".