26796647864 has 64 divisors (see below), whose sum is σ = 58258483200. Its totient is φ = 11317135104.

The previous prime is 26796647863. The next prime is 26796647869. The reversal of 26796647864 is 46874669762.

It is a self number, because there is not a number n which added to its sum of digits gives 26796647864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26796647861) 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, 6567377 + ... + 6571455.

It is an arithmetic number, because the mean of its divisors is an integer number (910288800).

Almost surely, 2^26796647864 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 26796647864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29129241600).

26796647864 is an abundant number, since it is smaller than the sum of its proper divisors (31461835336).

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

26796647864 is a wasteful number, since it uses less digits than its factorization.

26796647864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772 (or 5768 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 65.

The spelling of 26796647864 in words is "twenty-six billion, seven hundred ninety-six million, six hundred forty-seven thousand, eight hundred sixty-four".