266433720270 has 64 divisors (see below), whose sum is σ = 649354731264. Its totient is φ = 69950926080.

The previous prime is 266433720257. The next prime is 266433720281. The reversal of 266433720270 is 72027334662.

It is a super-3 number, since 3×266433720270³ (a number of 35 digits) contains 333 as substring.

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, 1124925 + ... + 1341015.

It is an arithmetic number, because the mean of its divisors is an integer number (10146167676).

Almost surely, 2^266433720270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266433720270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324677365632).

266433720270 is an abundant number, since it is smaller than the sum of its proper divisors (382921010994).

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

266433720270 is a wasteful number, since it uses less digits than its factorization.

266433720270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216737.

The product of its (nonzero) digits is 508032, while the sum is 42.

The spelling of 266433720270 in words is "two hundred sixty-six billion, four hundred thirty-three million, seven hundred twenty thousand, two hundred seventy".