26800644280 has 32 divisors (see below), whose sum is σ = 60340269600. Its totient is φ = 10713356416.

The previous prime is 26800644257. The next prime is 26800644281. The reversal of 26800644280 is 8244600862.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26800644281) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 152527 + ... + 277246.

It is an arithmetic number, because the mean of its divisors is an integer number (1885633425).

Almost surely, 2^26800644280 is an apocalyptic number.

26800644280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26800644280 is an abundant number, since it is smaller than the sum of its proper divisors (33539625320).

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

26800644280 is a wasteful number, since it uses less digits than its factorization.

26800644280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431343 (or 431339 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 26800644280 in words is "twenty-six billion, eight hundred million, six hundred forty-four thousand, two hundred eighty".