26171902843 has 2 divisors, whose sum is σ = 26171902844. Its totient is φ = 26171902842.

The previous prime is 26171902793. The next prime is 26171902879. The reversal of 26171902843 is 34820917162.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26171902843 - 2³³ = 17581968251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26171902843.

It is not a weakly prime, because it can be changed into another prime (26171902243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13085951421 + 13085951422.

It is an arithmetic number, because the mean of its divisors is an integer number (13085951422).

Almost surely, 2^26171902843 is an apocalyptic number.

26171902843 is a deficient number, since it is larger than the sum of its proper divisors (1).

26171902843 is an equidigital number, since it uses as much as digits as its factorization.

26171902843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 26171902843 in words is "twenty-six billion, one hundred seventy-one million, nine hundred two thousand, eight hundred forty-three".