26259960656 has 20 divisors (see below), whose sum is σ = 53871537492. Its totient is φ = 12357628416.

The previous prime is 26259960641. The next prime is 26259960659. The reversal of 26259960656 is 65606995262.

It can be written as a sum of positive squares in 2 ways, for example, as 23660592400 + 2599368256 = 153820^2 + 50984^2 .

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26259960659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48271715 + ... + 48272258.

Almost surely, 2^26259960656 is an apocalyptic number.

It is an amenable number.

26259960656 is an abundant number, since it is smaller than the sum of its proper divisors (27611576836).

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

26259960656 is a wasteful number, since it uses less digits than its factorization.

26259960656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96543998 (or 96543992 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 56.

The spelling of 26259960656 in words is "twenty-six billion, two hundred fifty-nine million, nine hundred sixty thousand, six hundred fifty-six".