26680985589 has 4 divisors (see below), whose sum is σ = 35574647456. Its totient is φ = 17787323724.

The previous prime is 26680985587. The next prime is 26680985593. The reversal of 26680985589 is 98558908662.

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 not a de Polignac number, because 26680985589 - 2¹ = 26680985587 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 (26680985587) 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, 4446830929 + ... + 4446830934.

It is an arithmetic number, because the mean of its divisors is an integer number (8893661864).

Almost surely, 2^26680985589 is an apocalyptic number.

It is an amenable number.

26680985589 is a deficient number, since it is larger than the sum of its proper divisors (8893661867).

26680985589 is an equidigital number, since it uses as much as digits as its factorization.

26680985589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8893661866.

The product of its (nonzero) digits is 74649600, while the sum is 66.

The spelling of 26680985589 in words is "twenty-six billion, six hundred eighty million, nine hundred eighty-five thousand, five hundred eighty-nine".