26659289089 has 4 divisors (see below), whose sum is σ = 26672762160. Its totient is φ = 26645816020.

The previous prime is 26659289051. The next prime is 26659289113. The reversal of 26659289089 is 98098295662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26659289089 - 2¹¹ = 26659287041 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 26659289089.

It is not an unprimeable number, because it can be changed into a prime (26659289039) 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, 6733567 + ... + 6737524.

It is an arithmetic number, because the mean of its divisors is an integer number (6668190540).

Almost surely, 2^26659289089 is an apocalyptic number.

It is an amenable number.

26659289089 is a deficient number, since it is larger than the sum of its proper divisors (13473071).

26659289089 is a wasteful number, since it uses less digits than its factorization.

26659289089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13473070.

The product of its (nonzero) digits is 33592320, while the sum is 64.

The spelling of 26659289089 in words is "twenty-six billion, six hundred fifty-nine million, two hundred eighty-nine thousand, eighty-nine".