26690859971 has 2 divisors, whose sum is σ = 26690859972. Its totient is φ = 26690859970.

The previous prime is 26690859959. The next prime is 26690859991. The reversal of 26690859971 is 17995809662.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26690859971 - 2⁶ = 26690859907 is a prime.

It is not a weakly prime, because it can be changed into another prime (26690859901) 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 as a sum of consecutive naturals, namely, 13345429985 + 13345429986.

It is an arithmetic number, because the mean of its divisors is an integer number (13345429986).

Almost surely, 2^26690859971 is an apocalyptic number.

26690859971 is a deficient number, since it is larger than the sum of its proper divisors (1).

26690859971 is an equidigital number, since it uses as much as digits as its factorization.

26690859971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14696640, while the sum is 62.

The spelling of 26690859971 in words is "twenty-six billion, six hundred ninety million, eight hundred fifty-nine thousand, nine hundred seventy-one".