26740073561 has 8 divisors (see below), whose sum is σ = 26848677960. Its totient is φ = 26631674368.

The previous prime is 26740073537. The next prime is 26740073573. The reversal of 26740073561 is 16537004762.

It can be written as a sum of positive squares in 4 ways, for example, as 15663774025 + 11076299536 = 125155^2 + 105244^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26740073561 - 2²² = 26735879257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26740073501) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 212585 + ... + 314121.

It is an arithmetic number, because the mean of its divisors is an integer number (3356084745).

Almost surely, 2^26740073561 is an apocalyptic number.

It is an amenable number.

26740073561 is a deficient number, since it is larger than the sum of its proper divisors (108604399).

26740073561 is a wasteful number, since it uses less digits than its factorization.

26740073561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102603.

The product of its (nonzero) digits is 211680, while the sum is 41.

The spelling of 26740073561 in words is "twenty-six billion, seven hundred forty million, seventy-three thousand, five hundred sixty-one".