26944729421 has 8 divisors (see below), whose sum is σ = 27095796864. Its totient is φ = 26793780480.

The previous prime is 26944729417. The next prime is 26944729423. The reversal of 26944729421 is 12492744962.

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 26944729421 - 2² = 26944729417 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 26944729421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26944729423) 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, 447836 + ... + 504426.

It is an arithmetic number, because the mean of its divisors is an integer number (3386974608).

Almost surely, 2^26944729421 is an apocalyptic number.

It is an amenable number.

26944729421 is a deficient number, since it is larger than the sum of its proper divisors (151067443).

26944729421 is a wasteful number, since it uses less digits than its factorization.

26944729421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59251.

The product of its digits is 1741824, while the sum is 50.

The spelling of 26944729421 in words is "twenty-six billion, nine hundred forty-four million, seven hundred twenty-nine thousand, four hundred twenty-one".