26091537199 has 12 divisors (see below), whose sum is σ = 32686102344. Its totient is φ = 20643853104.

The previous prime is 26091537163. The next prime is 26091537223. The reversal of 26091537199 is 99173519062.

It is a happy number.

It is not a de Polignac number, because 26091537199 - 2²³ = 26083148591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26091537139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20479377 + ... + 20480650.

It is an arithmetic number, because the mean of its divisors is an integer number (2723841862).

Almost surely, 2^26091537199 is an apocalyptic number.

26091537199 is a deficient number, since it is larger than the sum of its proper divisors (6594565145).

26091537199 is a wasteful number, since it uses less digits than its factorization.

26091537199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40960054 (or 40960047 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 52.

The spelling of 26091537199 in words is "twenty-six billion, ninety-one million, five hundred thirty-seven thousand, one hundred ninety-nine".