26744746721 has 8 divisors (see below), whose sum is σ = 33344099904. Its totient is φ = 20840062320.

The previous prime is 26744746711. The next prime is 26744746733. The reversal of 26744746721 is 12764744762.

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

It is not a de Polignac number, because 26744746721 - 2¹⁰ = 26744745697 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 26744746721.

It is not an unprimeable number, because it can be changed into a prime (26744746711) 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, 173667110 + ... + 173667263.

It is an arithmetic number, because the mean of its divisors is an integer number (4168012488).

Almost surely, 2^26744746721 is an apocalyptic number.

It is an amenable number.

26744746721 is a deficient number, since it is larger than the sum of its proper divisors (6599353183).

26744746721 is a wasteful number, since it uses less digits than its factorization.

26744746721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347334391.

The product of its digits is 3161088, while the sum is 50.

The spelling of 26744746721 in words is "twenty-six billion, seven hundred forty-four million, seven hundred forty-six thousand, seven hundred twenty-one".