26784242568 has 128 divisors (see below), whose sum is σ = 75288268800. Its totient is φ = 8822011968.

The previous prime is 26784242557. The next prime is 26784242579. The reversal of 26784242568 is 86524248762.

26784242568 is a `hidden beast` number, since 2 + 6 + 78 + 4 + 2 + 4 + 2 + 568 = 666.

It is an interprime number because it is at equal distance from previous prime (26784242557) and next prime (26784242579).

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10699605 + ... + 10702107.

It is an arithmetic number, because the mean of its divisors is an integer number (588189600).

Almost surely, 2^26784242568 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 26784242568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37644134400).

26784242568 is an abundant number, since it is smaller than the sum of its proper divisors (48504026232).

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

26784242568 is a wasteful number, since it uses less digits than its factorization.

26784242568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088 (or 3078 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 54.

The spelling of 26784242568 in words is "twenty-six billion, seven hundred eighty-four million, two hundred forty-two thousand, five hundred sixty-eight".