26988268488 has 16 divisors (see below), whose sum is σ = 67470671280. Its totient is φ = 8996089488.

The previous prime is 26988268487. The next prime is 26988268511. The reversal of 26988268488 is 88486288962.

It is a super-2 number, since 2×26988268488² (a number of 22 digits) contains 22 as substring.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562255570 + ... + 562255617.

It is an arithmetic number, because the mean of its divisors is an integer number (4216916955).

Almost surely, 2^26988268488 is an apocalyptic number.

It is an amenable number.

26988268488 is an abundant number, since it is smaller than the sum of its proper divisors (40482402792).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26988268488 is a wasteful number, since it uses less digits than its factorization.

26988268488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124511196 (or 1124511192 counting only the distinct ones).

The product of its digits is 169869312, while the sum is 69.

The spelling of 26988268488 in words is "twenty-six billion, nine hundred eighty-eight million, two hundred sixty-eight thousand, four hundred eighty-eight".