26221984279 has 8 divisors (see below), whose sum is σ = 27428980320. Its totient is φ = 25020564096.

The previous prime is 26221984177. The next prime is 26221984297. The reversal of 26221984279 is 97248912262.

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 26221984279 - 2¹³ = 26221976087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26221984979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1384342 + ... + 1403155.

It is an arithmetic number, because the mean of its divisors is an integer number (3428622540).

Almost surely, 2^26221984279 is an apocalyptic number.

26221984279 is a deficient number, since it is larger than the sum of its proper divisors (1206996041).

26221984279 is a wasteful number, since it uses less digits than its factorization.

26221984279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787929.

The product of its digits is 1741824, while the sum is 52.

The spelling of 26221984279 in words is "twenty-six billion, two hundred twenty-one million, nine hundred eighty-four thousand, two hundred seventy-nine".