266664443602023 has 16 divisors (see below), whose sum is σ = 405735689966560. Its totient is φ = 172971530984448.

The previous prime is 266664443601991. The next prime is 266664443602061. The reversal of 266664443602023 is 320206344466662.

It is not a de Polignac number, because 266664443602023 - 2⁵ = 266664443601991 is a prime.

It is a super-2 number, since 2×266664443602023² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266664443682023) 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, 133465686490 + ... + 133465688487.

It is an arithmetic number, because the mean of its divisors is an integer number (25358480622910).

Almost surely, 2^{266664443602023} is an apocalyptic number.

266664443602023 is a deficient number, since it is larger than the sum of its proper divisors (139071246364537).

266664443602023 is a wasteful number, since it uses less digits than its factorization.

266664443602023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266931375023 (or 266931375017 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 54.

The spelling of 266664443602023 in words is "two hundred sixty-six trillion, six hundred sixty-four billion, four hundred forty-three million, six hundred two thousand, twenty-three".