266023375375165 has 8 divisors (see below), whose sum is σ = 319387904268120. Its totient is φ = 212712131088192.

The previous prime is 266023375375151. The next prime is 266023375375253. The reversal of 266023375375165 is 561573573320662.

It can be written as a sum of positive squares in 4 ways, for example, as 9526150404 + 266013849224761 = 97602^2 + 16309931^2 .

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 266023375375165 - 2⁵ = 266023375375133 is a prime.

It is a congruent number.

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, 13321140510 + ... + 13321160479.

It is an arithmetic number, because the mean of its divisors is an integer number (39923488033515).

Almost surely, 2^{266023375375165} is an apocalyptic number.

It is an amenable number.

266023375375165 is a deficient number, since it is larger than the sum of its proper divisors (53364528892955).

266023375375165 is a wasteful number, since it uses less digits than its factorization.

266023375375165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26642302991.

The product of its (nonzero) digits is 142884000, while the sum is 61.

The spelling of 266023375375165 in words is "two hundred sixty-six trillion, twenty-three billion, three hundred seventy-five million, three hundred seventy-five thousand, one hundred sixty-five".