26659289087 has 4 divisors (see below), whose sum is σ = 26853882576. Its totient is φ = 26464695600.

The previous prime is 26659289051. The next prime is 26659289113. The reversal of 26659289087 is 78098295662.

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 26659289087 - 2⁶ = 26659289023 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 (26653289087) 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, 97296539 + ... + 97296812.

It is an arithmetic number, because the mean of its divisors is an integer number (6713470644).

Almost surely, 2^26659289087 is an apocalyptic number.

26659289087 is a deficient number, since it is larger than the sum of its proper divisors (194593489).

26659289087 is a wasteful number, since it uses less digits than its factorization.

26659289087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194593488.

The product of its (nonzero) digits is 26127360, while the sum is 62.

The spelling of 26659289087 in words is "twenty-six billion, six hundred fifty-nine million, two hundred eighty-nine thousand, eighty-seven".