26871857440 has 96 divisors (see below), whose sum is σ = 63867654144. Its totient is φ = 10684154880.

The previous prime is 26871857413. The next prime is 26871857459. The reversal of 26871857440 is 4475817862.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24720577 + ... + 24721663.

It is an arithmetic number, because the mean of its divisors is an integer number (665288064).

Almost surely, 2^26871857440 is an apocalyptic number.

26871857440 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 26871857440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31933827072).

26871857440 is an abundant number, since it is smaller than the sum of its proper divisors (36995796704).

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

26871857440 is a wasteful number, since it uses less digits than its factorization.

26871857440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890 (or 1882 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 52.

The spelling of 26871857440 in words is "twenty-six billion, eight hundred seventy-one million, eight hundred fifty-seven thousand, four hundred forty".