26744008874521 has 3 divisors (see below), whose sum is σ = 26744014045983. Its totient is φ = 26744003703060.

The previous prime is 26744008874447. The next prime is 26744008874567. The reversal of 26744008874521 is 12547880044762.

The square root of 26744008874521 is 5171461.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 24985891990921 + 1758116883600 = 4998589^2 + 1325940^2 .

It is not a de Polignac number, because 26744008874521 - 2¹¹ = 26744008872473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26744008872521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2585731 + ... + 7757191.

It is an arithmetic number, because the mean of its divisors is an integer number (8914671348661).

Almost surely, 2^{26744008874521} is an apocalyptic number.

26744008874521 is the 5171461-st square number.

26744008874521 is the 2585731-st centered octagonal number.

It is an amenable number.

26744008874521 is a deficient number, since it is larger than the sum of its proper divisors (5171462).

26744008874521 is an frugal number, since it uses more digits than its factorization.

26744008874521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10342922 (or 5171461 counting only the distinct ones).

The product of its (nonzero) digits is 24084480, while the sum is 58.

The spelling of 26744008874521 in words is "twenty-six trillion, seven hundred forty-four billion, eight million, eight hundred seventy-four thousand, five hundred twenty-one".