212266410660 has 36 divisors (see below), whose sum is σ = 643874779548. Its totient is φ = 56604376128.

The previous prime is 212266410659. The next prime is 212266410709. The reversal of 212266410660 is 66014662212.

212266410660 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 6 + 641 + 0 + 6 + 6 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 166508066916 + 45758343744 = 408054^2 + 213912^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 589628739 + ... + 589629098.

It is an arithmetic number, because the mean of its divisors is an integer number (17885410543).

Almost surely, 2^212266410660 is an apocalyptic number.

212266410660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212266410660 is an abundant number, since it is smaller than the sum of its proper divisors (431608368888).

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

212266410660 is a wasteful number, since it uses less digits than its factorization.

212266410660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179257852 (or 1179257847 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 212266410660 in words is "two hundred twelve billion, two hundred sixty-six million, four hundred ten thousand, six hundred sixty".