266491752415 has 64 divisors (see below), whose sum is σ = 380698859520. Its totient is φ = 175275118080.

The previous prime is 266491752403. The next prime is 266491752419. The reversal of 266491752415 is 514257194662.

It is not a de Polignac number, because 266491752415 - 2⁷ = 266491752287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266491752419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54707430 + ... + 54712300.

It is an arithmetic number, because the mean of its divisors is an integer number (5948419680).

Almost surely, 2^266491752415 is an apocalyptic number.

266491752415 is a deficient number, since it is larger than the sum of its proper divisors (114207107105).

266491752415 is a wasteful number, since it uses less digits than its factorization.

266491752415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5512.

The product of its digits is 3628800, while the sum is 52.

The spelling of 266491752415 in words is "two hundred sixty-six billion, four hundred ninety-one million, seven hundred fifty-two thousand, four hundred fifteen".