212297934564 has 81 divisors (see below), whose sum is σ = 550343900379. Its totient is φ = 69003118080.

The previous prime is 212297934559. The next prime is 212297934577. The reversal of 212297934564 is 465439792212.

It is a happy number.

The square root of 212297934564 is 460758.

It is a perfect power (a square), and thus also a powerful number.

212297934564 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 9 + 79 + 3 + 4 + 564 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 182371702500 + 29926232064 = 427050^2 + 172992^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212297934564.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 113345532 + ... + 113347404.

Almost surely, 2^212297934564 is an apocalyptic number.

212297934564 is the 460758-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212297934564

212297934564 is an abundant number, since it is smaller than the sum of its proper divisors (338045965815).

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

212297934564 is an equidigital number, since it uses as much as digits as its factorization.

212297934564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838 (or 1919 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 212297934564 in words is "two hundred twelve billion, two hundred ninety-seven million, nine hundred thirty-four thousand, five hundred sixty-four".