26840534538 has 16 divisors (see below), whose sum is σ = 53780301216. Its totient is φ = 8930306160.

The previous prime is 26840534527. The next prime is 26840534557. The reversal of 26840534538 is 83543504862.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4131156 + ... + 4137647.

It is an arithmetic number, because the mean of its divisors is an integer number (3361268826).

Almost surely, 2^26840534538 is an apocalyptic number.

26840534538 is an abundant number, since it is smaller than the sum of its proper divisors (26939766678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26840534538 is a wasteful number, since it uses less digits than its factorization.

26840534538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8269349.

The product of its (nonzero) digits is 2764800, while the sum is 48.

The spelling of 26840534538 in words is "twenty-six billion, eight hundred forty million, five hundred thirty-four thousand, five hundred thirty-eight".