26808782251 has 8 divisors (see below), whose sum is σ = 26893962560. Its totient is φ = 26723668608.

The previous prime is 26808782219. The next prime is 26808782257. The reversal of 26808782251 is 15228780862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26808782251 - 2⁵ = 26808782219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26808782195 and 26808782204.

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 7 ways as a sum of consecutive naturals, for example, 861475 + ... + 892051.

It is an arithmetic number, because the mean of its divisors is an integer number (3361745320).

Almost surely, 2^26808782251 is an apocalyptic number.

26808782251 is a deficient number, since it is larger than the sum of its proper divisors (85180309).

26808782251 is a wasteful number, since it uses less digits than its factorization.

26808782251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33333.

The product of its (nonzero) digits is 860160, while the sum is 49.

The spelling of 26808782251 in words is "twenty-six billion, eight hundred eight million, seven hundred eighty-two thousand, two hundred fifty-one".