26420843680 has 576 divisors, whose sum is σ = 85457756160. Its totient is φ = 7527168000.

The previous prime is 26420843671. The next prime is 26420843681. The reversal of 26420843680 is 8634802462.

It is not an unprimeable number, because it can be changed into a prime (26420843681) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 79821115 + ... + 79821445.

It is an arithmetic number, because the mean of its divisors is an integer number (148364160).

Almost surely, 2^26420843680 is an apocalyptic number.

26420843680 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 26420843680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42728878080).

26420843680 is an abundant number, since it is smaller than the sum of its proper divisors (59036912480).

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

26420843680 is a wasteful number, since it uses less digits than its factorization.

26420843680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 43.

The spelling of 26420843680 in words is "twenty-six billion, four hundred twenty million, eight hundred forty-three thousand, six hundred eighty".