26261012663 has 8 divisors (see below), whose sum is σ = 26987551968. Its totient is φ = 25535356704.

The previous prime is 26261012651. The next prime is 26261012677. The reversal of 26261012663 is 36621016262.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26261012663 - 2¹⁶ = 26260947127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26261012363) 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 7 ways as a sum of consecutive naturals, for example, 160331 + ... + 279692.

It is an arithmetic number, because the mean of its divisors is an integer number (3373443996).

Almost surely, 2^26261012663 is an apocalyptic number.

26261012663 is a deficient number, since it is larger than the sum of its proper divisors (726539305).

26261012663 is a wasteful number, since it uses less digits than its factorization.

26261012663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441673.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 26261012663 in words is "twenty-six billion, two hundred sixty-one million, twelve thousand, six hundred sixty-three".