26712052448509 has 4 divisors (see below), whose sum is σ = 26712086419260. Its totient is φ = 26712018477760.

The previous prime is 26712052448449. The next prime is 26712052448539. The reversal of 26712052448509 is 90584425021762.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11174880123225 + 15537172325284 = 3342885^2 + 3941722^2 .

It is a cyclic number.

It is not a de Polignac number, because 26712052448509 - 2⁷ = 26712052448381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26712052448509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26712052448539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15777244 + ... + 17388085.

It is an arithmetic number, because the mean of its divisors is an integer number (6678021604815).

Almost surely, 2^{26712052448509} is an apocalyptic number.

It is an amenable number.

26712052448509 is a deficient number, since it is larger than the sum of its proper divisors (33970751).

26712052448509 is an equidigital number, since it uses as much as digits as its factorization.

26712052448509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33970750.

The product of its (nonzero) digits is 9676800, while the sum is 55.

The spelling of 26712052448509 in words is "twenty-six trillion, seven hundred twelve billion, fifty-two million, four hundred forty-eight thousand, five hundred nine".