26806336969 has 4 divisors (see below), whose sum is σ = 26867399680. Its totient is φ = 26745274260.

The previous prime is 26806336919. The next prime is 26806336993. The reversal of 26806336969 is 96963360862.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 26806336969 - 2¹⁹ = 26805812681 is a prime.

It is a super-2 number, since 2×26806336969² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26806336919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30530697 + ... + 30531574.

It is an arithmetic number, because the mean of its divisors is an integer number (6716849920).

Almost surely, 2^26806336969 is an apocalyptic number.

It is an amenable number.

26806336969 is a deficient number, since it is larger than the sum of its proper divisors (61062711).

26806336969 is an equidigital number, since it uses as much as digits as its factorization.

26806336969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61062710.

The product of its (nonzero) digits is 15116544, while the sum is 58.

The spelling of 26806336969 in words is "twenty-six billion, eight hundred six million, three hundred thirty-six thousand, nine hundred sixty-nine".