1266541648231 has 32 divisors (see below), whose sum is σ = 1424094566400. Its totient is φ = 1120795885440.

The previous prime is 1266541648201. The next prime is 1266541648259. The reversal of 1266541648231 is 1328461456621.

It is a cyclic number.

It is not a de Polignac number, because 1266541648231 - 2²³ = 1266533259623 is a prime.

It is a super-3 number, since 3×1266541648231³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266541648201) 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 31 ways as a sum of consecutive naturals, for example, 68775981 + ... + 68794393.

It is an arithmetic number, because the mean of its divisors is an integer number (44502955200).

Almost surely, 2^{1266541648231} is an apocalyptic number.

1266541648231 is a deficient number, since it is larger than the sum of its proper divisors (157552918169).

1266541648231 is a wasteful number, since it uses less digits than its factorization.

1266541648231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22519.

The product of its digits is 1658880, while the sum is 49.

The spelling of 1266541648231 in words is "one trillion, two hundred sixty-six billion, five hundred forty-one million, six hundred forty-eight thousand, two hundred thirty-one".