213713752266 has 112 divisors (see below), whose sum is σ = 562073903424. Its totient is φ = 59640924672.

The previous prime is 213713752261. The next prime is 213713752271. The reversal of 213713752266 is 662257317312.

213713752266 is a `hidden beast` number, since 2 + 1 + 37 + 1 + 37 + 522 + 66 = 666.

It is an interprime number because it is at equal distance from previous prime (213713752261) and next prime (213713752271).

It is a super-2 number, since 2×213713752266² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213713752261) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 195370 + ... + 682346.

Almost surely, 2^213713752266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213713752266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281036951712).

213713752266 is an abundant number, since it is smaller than the sum of its proper divisors (348360151158).

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

213713752266 is an equidigital number, since it uses as much as digits as its factorization.

213713752266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487047 (or 487032 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The spelling of 213713752266 in words is "two hundred thirteen billion, seven hundred thirteen million, seven hundred fifty-two thousand, two hundred sixty-six".