26554331191 has 2 divisors, whose sum is σ = 26554331192. Its totient is φ = 26554331190.

The previous prime is 26554331189. The next prime is 26554331203. The reversal of 26554331191 is 19113345562.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26554331191 - 2¹ = 26554331189 is a prime.

Together with 26554331189, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26554337191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13277165595 + 13277165596.

It is an arithmetic number, because the mean of its divisors is an integer number (13277165596).

Almost surely, 2^26554331191 is an apocalyptic number.

26554331191 is a deficient number, since it is larger than the sum of its proper divisors (1).

26554331191 is an equidigital number, since it uses as much as digits as its factorization.

26554331191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 40.

The spelling of 26554331191 in words is "twenty-six billion, five hundred fifty-four million, three hundred thirty-one thousand, one hundred ninety-one".