26266266266261 has 4 divisors (see below), whose sum is σ = 30018590018592. Its totient is φ = 22513942513932.

The previous prime is 26266266266257. The next prime is 26266266266419. The reversal of 26266266266261 is 16266266266262.

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 not a de Polignac number, because 26266266266261 - 2² = 26266266266257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26266266266261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26266266266221) 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, 1876161876155 + ... + 1876161876168.

It is an arithmetic number, because the mean of its divisors is an integer number (7504647504648).

Almost surely, 2^{26266266266261} is an apocalyptic number.

It is an amenable number.

26266266266261 is a deficient number, since it is larger than the sum of its proper divisors (3752323752331).

26266266266261 is an equidigital number, since it uses as much as digits as its factorization.

26266266266261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752323752330.

The product of its digits is 53747712, while the sum is 59.

Subtracting from 26266266266261 its reverse (16266266266262), we obtain a palindrome (9999999999999).

The spelling of 26266266266261 in words is "twenty-six trillion, two hundred sixty-six billion, two hundred sixty-six million, two hundred sixty-six thousand, two hundred sixty-one".