26197667826 has 64 divisors (see below), whose sum is σ = 58332009600. Its totient is φ = 7777175040.

The previous prime is 26197667809. The next prime is 26197667833. The reversal of 26197667826 is 62876679162.

It is a self number, because there is not a number n which added to its sum of digits gives 26197667826.

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 31 ways as a sum of consecutive naturals, for example, 699636 + ... + 736128.

It is an arithmetic number, because the mean of its divisors is an integer number (911437650).

Almost surely, 2^26197667826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26197667826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29166004800).

26197667826 is an abundant number, since it is smaller than the sum of its proper divisors (32134341774).

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

26197667826 is a wasteful number, since it uses less digits than its factorization.

26197667826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36731.

The product of its digits is 18289152, while the sum is 60.

The spelling of 26197667826 in words is "twenty-six billion, one hundred ninety-seven million, six hundred sixty-seven thousand, eight hundred twenty-six".