26798899989 has 8 divisors (see below), whose sum is σ = 35734366080. Its totient is φ = 17864683616.

The previous prime is 26798899957. The next prime is 26798899997. The reversal of 26798899989 is 98999889762.

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 26798899989 - 2⁵ = 26798899957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26798899789) 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, 261192 + ... + 349025.

It is an arithmetic number, because the mean of its divisors is an integer number (4466795760).

Almost surely, 2^26798899989 is an apocalyptic number.

It is an amenable number.

26798899989 is a deficient number, since it is larger than the sum of its proper divisors (8935466091).

26798899989 is a wasteful number, since it uses less digits than its factorization.

26798899989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624859.

The product of its digits is 2539579392, while the sum is 84.

The spelling of 26798899989 in words is "twenty-six billion, seven hundred ninety-eight million, eight hundred ninety-nine thousand, nine hundred eighty-nine".