26293276523809 has 9 divisors (see below), whose sum is σ = 26799013445113. Its totient is φ = 25796910326512.

The previous prime is 26293276523777. The next prime is 26293276523873. The reversal of 26293276523809 is 90832567239262.

The square root of 26293276523809 is 5127697.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 10687047501025 + 15606229022784 = 3269105^2 + 3950472^2 .

It is not a de Polignac number, because 26293276523809 - 2⁵ = 26293276523777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26293276527809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 271719567 + ... + 271816315.

Almost surely, 2^{26293276523809} is an apocalyptic number.

26293276523809 is the 5127697-th square number.

26293276523809 is the 2563849-th centered octagonal number.

It is an amenable number.

26293276523809 is a deficient number, since it is larger than the sum of its proper divisors (505736921304).

26293276523809 is an frugal number, since it uses more digits than its factorization.

26293276523809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193604 (or 96802 counting only the distinct ones).

The product of its (nonzero) digits is 117573120, while the sum is 64.

The spelling of 26293276523809 in words is "twenty-six trillion, two hundred ninety-three billion, two hundred seventy-six million, five hundred twenty-three thousand, eight hundred nine".