212160336445 has 16 divisors (see below), whose sum is σ = 259815006000. Its totient is φ = 166281527808.

The previous prime is 212160336403. The next prime is 212160336497. The reversal of 212160336445 is 544633061212.

It can be written as a sum of positive squares in 8 ways, for example, as 2200266649 + 209960069796 = 46907^2 + 458214^2 .

It is a cyclic number.

It is not a de Polignac number, because 212160336445 - 2⁷ = 212160336317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2138490 + ... + 2235499.

It is an arithmetic number, because the mean of its divisors is an integer number (16238437875).

Almost surely, 2^212160336445 is an apocalyptic number.

It is an amenable number.

212160336445 is a deficient number, since it is larger than the sum of its proper divisors (47654669555).

212160336445 is a wasteful number, since it uses less digits than its factorization.

212160336445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374192.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 212160336445 its reverse (544633061212), we get a palindrome (756793397657).

The spelling of 212160336445 in words is "two hundred twelve billion, one hundred sixty million, three hundred thirty-six thousand, four hundred forty-five".