26803523491 has 2 divisors, whose sum is σ = 26803523492. Its totient is φ = 26803523490.

The previous prime is 26803523489. The next prime is 26803523507. The reversal of 26803523491 is 19432530862.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26803523491 - 2¹ = 26803523489 is a prime.

Together with 26803523489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26803523471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13401761745 + 13401761746.

It is an arithmetic number, because the mean of its divisors is an integer number (13401761746).

Almost surely, 2^26803523491 is an apocalyptic number.

26803523491 is a deficient number, since it is larger than the sum of its proper divisors (1).

26803523491 is an equidigital number, since it uses as much as digits as its factorization.

26803523491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 26803523491 in words is "twenty-six billion, eight hundred three million, five hundred twenty-three thousand, four hundred ninety-one".