26598779219 has 4 divisors (see below), whose sum is σ = 26619131544. Its totient is φ = 26578426896.

The previous prime is 26598779167. The next prime is 26598779261. The reversal of 26598779219 is 91297789562.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26598779219 - 2¹⁶ = 26598713683 is a prime.

It is a super-2 number, since 2×26598779219² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26598772219) 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, 10174202 + ... + 10176815.

It is an arithmetic number, because the mean of its divisors is an integer number (6654782886).

Almost surely, 2^26598779219 is an apocalyptic number.

26598779219 is a deficient number, since it is larger than the sum of its proper divisors (20352325).

26598779219 is a wasteful number, since it uses less digits than its factorization.

26598779219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20352324.

The product of its digits is 34292160, while the sum is 65.

It can be divided in two parts, 2659 and 8779219, that added together give a palindrome (8781878).

The spelling of 26598779219 in words is "twenty-six billion, five hundred ninety-eight million, seven hundred seventy-nine thousand, two hundred nineteen".