26266705961 has 4 divisors (see below), whose sum is σ = 26877559632. Its totient is φ = 25655852292.

The previous prime is 26266705919. The next prime is 26266705999. The reversal of 26266705961 is 16950766262.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26266705961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26266705061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305426771 + ... + 305426856.

It is an arithmetic number, because the mean of its divisors is an integer number (6719389908).

Almost surely, 2^26266705961 is an apocalyptic number.

It is an amenable number.

26266705961 is a deficient number, since it is larger than the sum of its proper divisors (610853671).

26266705961 is an equidigital number, since it uses as much as digits as its factorization.

26266705961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610853670.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The spelling of 26266705961 in words is "twenty-six billion, two hundred sixty-six million, seven hundred five thousand, nine hundred sixty-one".