26695812768 has 96 divisors (see below), whose sum is σ = 70687096704. Its totient is φ = 8821343232.

The previous prime is 26695812749. The next prime is 26695812769. The reversal of 26695812768 is 86721859662.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×26695812768² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26695812769) 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, 7338246 + ... + 7341882.

It is an arithmetic number, because the mean of its divisors is an integer number (736323924).

Almost surely, 2^26695812768 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 26695812768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35343548352).

26695812768 is an abundant number, since it is smaller than the sum of its proper divisors (43991283936).

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

26695812768 is a wasteful number, since it uses less digits than its factorization.

26695812768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4294 (or 4286 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 60.

The spelling of 26695812768 in words is "twenty-six billion, six hundred ninety-five million, eight hundred twelve thousand, seven hundred sixty-eight".