26840787860 has 24 divisors (see below), whose sum is σ = 56368974816. Its totient is φ = 10735682720.

The previous prime is 26840787859. The next prime is 26840787889. The reversal of 26840787860 is 6878704862.

It is a junction number, because it is equal to n+sod(n) for n = 26840787796 and 26840787805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466475 + ... + 520845.

It is an arithmetic number, because the mean of its divisors is an integer number (2348707284).

Almost surely, 2^26840787860 is an apocalyptic number.

26840787860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26840787860 is an abundant number, since it is smaller than the sum of its proper divisors (29528186956).

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

26840787860 is a wasteful number, since it uses less digits than its factorization.

26840787860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79063 (or 79061 counting only the distinct ones).

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 26840787860 in words is "twenty-six billion, eight hundred forty million, seven hundred eighty-seven thousand, eight hundred sixty".