26801347840 has 36 divisors (see below), whose sum is σ = 64197606564. Its totient is φ = 10720538624.

The previous prime is 26801347831. The next prime is 26801347843. The reversal of 26801347840 is 4874310862.

It can be written as a sum of positive squares in 2 ways, for example, as 4425974784 + 22375373056 = 66528^2 + 149584^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26801347843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10467997 + ... + 10470556.

It is an arithmetic number, because the mean of its divisors is an integer number (1783266849).

Almost surely, 2^26801347840 is an apocalyptic number.

26801347840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26801347840 is an abundant number, since it is smaller than the sum of its proper divisors (37396258724).

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

26801347840 is an equidigital number, since it uses as much as digits as its factorization.

26801347840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20938574 (or 20938560 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The spelling of 26801347840 in words is "twenty-six billion, eight hundred one million, three hundred forty-seven thousand, eight hundred forty".