26806384836 has 384 divisors, whose sum is σ = 89088491520. Its totient is φ = 6769526400.

The previous prime is 26806384831. The next prime is 26806384879. The reversal of 26806384836 is 63848360862.

It is a happy number.

26806384836 is a `hidden beast` number, since 26 + 80 + 63 + 8 + 483 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (26806384831) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 49005915 + ... + 49006461.

It is an arithmetic number, because the mean of its divisors is an integer number (232001280).

Almost surely, 2^26806384836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26806384836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44544245760).

26806384836 is an abundant number, since it is smaller than the sum of its proper divisors (62282106684).

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

26806384836 is a wasteful number, since it uses less digits than its factorization.

26806384836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 54.

The spelling of 26806384836 in words is "twenty-six billion, eight hundred six million, three hundred eighty-four thousand, eight hundred thirty-six".