26297632768 has 72 divisors (see below), whose sum is σ = 57797755470. Its totient is φ = 11953356800.

The previous prime is 26297632763. The next prime is 26297632853. The reversal of 26297632768 is 86723679262.

It can be written as a sum of positive squares in only one way, i.e., 17986028544 + 8311604224 = 134112^2 + 91168^2 .

It is not an unprimeable number, because it can be changed into a prime (26297632763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 194748 + ... + 300868.

Almost surely, 2^26297632768 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 26297632768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28898877735).

26297632768 is an abundant number, since it is smaller than the sum of its proper divisors (31500122702).

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

26297632768 is a wasteful number, since it uses less digits than its factorization.

26297632768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106165 (or 106134 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 58.

The spelling of 26297632768 in words is "twenty-six billion, two hundred ninety-seven million, six hundred thirty-two thousand, seven hundred sixty-eight".