108549554591 has 2 divisors, whose sum is σ = 108549554592. Its totient is φ = 108549554590.

The previous prime is 108549554567. The next prime is 108549554593. The reversal of 108549554591 is 195455945801.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 108549554591 - 2¹⁸ = 108549292447 is a prime.

Together with 108549554593, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108549554593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54274777295 + 54274777296.

It is an arithmetic number, because the mean of its divisors is an integer number (54274777296).

Almost surely, 2^108549554591 is an apocalyptic number.

108549554591 is a deficient number, since it is larger than the sum of its proper divisors (1).

108549554591 is an equidigital number, since it uses as much as digits as its factorization.

108549554591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480000, while the sum is 56.

The spelling of 108549554591 in words is "one hundred eight billion, five hundred forty-nine million, five hundred fifty-four thousand, five hundred ninety-one".