26774249880 has 256 divisors, whose sum is σ = 95638118400. Its totient is φ = 5867458560.

The previous prime is 26774249867. The next prime is 26774249921. The reversal of 26774249880 is 8894247762.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 26774249880.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2833644 + ... + 2843076.

It is an arithmetic number, because the mean of its divisors is an integer number (373586400).

Almost surely, 2^26774249880 is an apocalyptic number.

26774249880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26774249880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47819059200).

26774249880 is an abundant number, since it is smaller than the sum of its proper divisors (68863868520).

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

26774249880 is a wasteful number, since it uses less digits than its factorization.

26774249880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9594 (or 9590 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 57.

The spelling of 26774249880 in words is "twenty-six billion, seven hundred seventy-four million, two hundred forty-nine thousand, eight hundred eighty".