26806133291 has 16 divisors (see below), whose sum is σ = 30788398080. Its totient is φ = 22862295360.

The previous prime is 26806133251. The next prime is 26806133303. The reversal of 26806133291 is 19233160862.

It is a cyclic number.

It is not a de Polignac number, because 26806133291 - 2¹⁴ = 26806116907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26806133251) 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 15 ways as a sum of consecutive naturals, for example, 1525940 + ... + 1543406.

It is an arithmetic number, because the mean of its divisors is an integer number (1924274880).

Almost surely, 2^26806133291 is an apocalyptic number.

26806133291 is a deficient number, since it is larger than the sum of its proper divisors (3982264789).

26806133291 is a wasteful number, since it uses less digits than its factorization.

26806133291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18554.

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 26806133291 in words is "twenty-six billion, eight hundred six million, one hundred thirty-three thousand, two hundred ninety-one".