26545345199 has 4 divisors (see below), whose sum is σ = 27460701960. Its totient is φ = 25629988440.

The previous prime is 26545345159. The next prime is 26545345207. The reversal of 26545345199 is 99154354562.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26545345199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26545345199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26545345109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 457678337 + ... + 457678394.

It is an arithmetic number, because the mean of its divisors is an integer number (6865175490).

Almost surely, 2^26545345199 is an apocalyptic number.

26545345199 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

26545345199 is a deficient number, since it is larger than the sum of its proper divisors (915356761).

26545345199 is an equidigital number, since it uses as much as digits as its factorization.

26545345199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915356760.

The product of its digits is 5832000, while the sum is 53.

The spelling of 26545345199 in words is "twenty-six billion, five hundred forty-five million, three hundred forty-five thousand, one hundred ninety-nine".