26812135680 has 144 divisors (see below), whose sum is σ = 93416065344. Its totient is φ = 6499901440.

The previous prime is 26812135619. The next prime is 26812135739. The reversal of 26812135680 is 8653121862.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275139 + ... + 359618.

It is an arithmetic number, because the mean of its divisors is an integer number (648722676).

Almost surely, 2^26812135680 is an apocalyptic number.

26812135680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26812135680 is an abundant number, since it is smaller than the sum of its proper divisors (66603929664).

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

26812135680 is a wasteful number, since it uses less digits than its factorization.

26812135680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634792 (or 634778 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The spelling of 26812135680 in words is "twenty-six billion, eight hundred twelve million, one hundred thirty-five thousand, six hundred eighty".