266052164640617 has 16 divisors (see below), whose sum is σ = 291158643764880. Its totient is φ = 242082603030528.

The previous prime is 266052164640599. The next prime is 266052164640653. The reversal of 266052164640617 is 716046461250662.

It can be written as a sum of positive squares in 8 ways, for example, as 163300042816 + 265888864597801 = 404104^2 + 16306099^2 .

It is a cyclic number.

It is not a de Polignac number, because 266052164640617 - 2¹⁶ = 266052164575081 is a prime.

It is a super-2 number, since 2×266052164640617² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266052164640697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1346959892 + ... + 1347157397.

It is an arithmetic number, because the mean of its divisors is an integer number (18197415235305).

Almost surely, 2^{266052164640617} is an apocalyptic number.

It is an amenable number.

266052164640617 is a deficient number, since it is larger than the sum of its proper divisors (25106479124263).

266052164640617 is a wasteful number, since it uses less digits than its factorization.

266052164640617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694117500.

The product of its (nonzero) digits is 17418240, while the sum is 56.

The spelling of 266052164640617 in words is "two hundred sixty-six trillion, fifty-two billion, one hundred sixty-four million, six hundred forty thousand, six hundred seventeen".