26808782250 has 32 divisors (see below), whose sum is σ = 66914722368. Its totient is φ = 7149008400.

The previous prime is 26808782219. The next prime is 26808782257. The reversal of 26808782250 is 5228780862.

It is a self number, because there is not a number n which added to its sum of digits gives 26808782250.

It is not an unprimeable number, because it can be changed into a prime (26808782257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17871772 + ... + 17873271.

It is an arithmetic number, because the mean of its divisors is an integer number (2091085074).

Almost surely, 2^26808782250 is an apocalyptic number.

26808782250 is an abundant number, since it is smaller than the sum of its proper divisors (40105940118).

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

26808782250 is a wasteful number, since it uses less digits than its factorization.

26808782250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35745063 (or 35745053 counting only the distinct ones).

The product of its (nonzero) digits is 860160, while the sum is 48.

The spelling of 26808782250 in words is "twenty-six billion, eight hundred eight million, seven hundred eighty-two thousand, two hundred fifty".