26545890836 has 24 divisors (see below), whose sum is σ = 47453218176. Its totient is φ = 12987941760.

The previous prime is 26545890817. The next prime is 26545890851. The reversal of 26545890836 is 63809854562.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1207535 + ... + 1229321.

It is an arithmetic number, because the mean of its divisors is an integer number (1977217424).

Almost surely, 2^26545890836 is an apocalyptic number.

It is an amenable number.

26545890836 is a deficient number, since it is larger than the sum of its proper divisors (20907327340).

26545890836 is a wasteful number, since it uses less digits than its factorization.

26545890836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28319 (or 28317 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 56.

The spelling of 26545890836 in words is "twenty-six billion, five hundred forty-five million, eight hundred ninety thousand, eight hundred thirty-six".