26988268489 has 16 divisors (see below), whose sum is σ = 33843059712. Its totient is φ = 20950458048.

The previous prime is 26988268487. The next prime is 26988268511. The reversal of 26988268489 is 98486288962.

It is not a de Polignac number, because 26988268489 - 2¹ = 26988268487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26988268487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2793049 + ... + 2802694.

It is an arithmetic number, because the mean of its divisors is an integer number (2115191232).

Almost surely, 2^26988268489 is an apocalyptic number.

It is an amenable number.

26988268489 is a deficient number, since it is larger than the sum of its proper divisors (6854791223).

26988268489 is a wasteful number, since it uses less digits than its factorization.

26988268489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5595816.

The product of its digits is 191102976, while the sum is 70.

The spelling of 26988268489 in words is "twenty-six billion, nine hundred eighty-eight million, two hundred sixty-eight thousand, four hundred eighty-nine".