266052164640440 has 128 divisors (see below), whose sum is σ = 607418036596800. Its totient is φ = 104867320135680.

The previous prime is 266052164640349. The next prime is 266052164640487. The reversal of 266052164640440 is 44046461250662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2972904095 + ... + 2972993585.

Almost surely, 2^{266052164640440} is an apocalyptic number.

266052164640440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266052164640440 is an abundant number, since it is smaller than the sum of its proper divisors (341365871956360).

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

266052164640440 is a wasteful number, since it uses less digits than its factorization.

266052164640440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93337 (or 93333 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 50.

The spelling of 266052164640440 in words is "two hundred sixty-six trillion, fifty-two billion, one hundred sixty-four million, six hundred forty thousand, four hundred forty".