266113361312465 has 8 divisors (see below), whose sum is σ = 327966737185320. Its totient is φ = 207136886643072.

The previous prime is 266113361312411. The next prime is 266113361312531. The reversal of 266113361312465 is 564213163311662.

It can be written as a sum of positive squares in 4 ways, for example, as 131095561391809 + 135017799920656 = 11449697^2 + 11619716^2 .

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 266113361312465 - 2⁸ = 266113361312209 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719225300660 + ... + 719225301029.

It is an arithmetic number, because the mean of its divisors is an integer number (40995842148165).

Almost surely, 2^{266113361312465} is an apocalyptic number.

It is an amenable number.

266113361312465 is a deficient number, since it is larger than the sum of its proper divisors (61853375872855).

266113361312465 is a wasteful number, since it uses less digits than its factorization.

266113361312465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438450601731.

The product of its digits is 2799360, while the sum is 50.

The spelling of 266113361312465 in words is "two hundred sixty-six trillion, one hundred thirteen billion, three hundred sixty-one million, three hundred twelve thousand, four hundred sixty-five".