266044011165640 has 64 divisors (see below), whose sum is σ = 611854419720960. Its totient is φ = 104074002289920.

The previous prime is 266044011165619. The next prime is 266044011165743. The reversal of 266044011165640 is 46561110440662.

It is a super-3 number, since 3×266044011165640³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201097044 + ... + 202415683.

It is an arithmetic number, because the mean of its divisors is an integer number (9560225308140).

Almost surely, 2^{266044011165640} is an apocalyptic number.

266044011165640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266044011165640 is an abundant number, since it is smaller than the sum of its proper divisors (345810408555320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266044011165640 is a wasteful number, since it uses less digits than its factorization.

266044011165640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403513102 (or 403513098 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 266044011165640 in words is "two hundred sixty-six trillion, forty-four billion, eleven million, one hundred sixty-five thousand, six hundred forty".