26740210549 has 4 divisors (see below), whose sum is σ = 28797149836. Its totient is φ = 24683271264.

The previous prime is 26740210517. The next prime is 26740210559. The reversal of 26740210549 is 94501204762.

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 9390579025 + 17349631524 = 96905^2 + 131718^2 .

It is a cyclic number.

It is not a de Polignac number, because 26740210549 - 2⁵ = 26740210517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26740210559) 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, 1028469624 + ... + 1028469649.

It is an arithmetic number, because the mean of its divisors is an integer number (7199287459).

Almost surely, 2^26740210549 is an apocalyptic number.

It is an amenable number.

26740210549 is a deficient number, since it is larger than the sum of its proper divisors (2056939287).

26740210549 is a wasteful number, since it uses less digits than its factorization.

26740210549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056939286.

The product of its (nonzero) digits is 120960, while the sum is 40.

The spelling of 26740210549 in words is "twenty-six billion, seven hundred forty million, two hundred ten thousand, five hundred forty-nine".