26798899988 has 48 divisors (see below), whose sum is σ = 53803016064. Its totient is φ = 11441364480.

The previous prime is 26798899957. The next prime is 26798899997. The reversal of 26798899988 is 88999889762.

Its product of digits (2257403904) is a multiple of the sum of its prime factors (4032).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9378656 + ... + 9381512.

It is an arithmetic number, because the mean of its divisors is an integer number (1120896168).

Almost surely, 2^26798899988 is an apocalyptic number.

26798899988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

26798899988 is an abundant number, since it is smaller than the sum of its proper divisors (27004116076).

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

26798899988 is a wasteful number, since it uses less digits than its factorization.

26798899988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4032 (or 4030 counting only the distinct ones).

The product of its digits is 2257403904, while the sum is 83.

The spelling of 26798899988 in words is "twenty-six billion, seven hundred ninety-eight million, eight hundred ninety-nine thousand, nine hundred eighty-eight".