212835517568 has 16 divisors (see below), whose sum is σ = 424008257910. Its totient is φ = 106417758720.

The previous prime is 212835517561. The next prime is 212835517571. The reversal of 212835517568 is 865715538212.

It can be written as a sum of positive squares in only one way, i.e., 139810183744 + 73025333824 = 373912^2 + 270232^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is not an unprimeable number, because it can be changed into a prime (212835517561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831388613 + ... + 831388868.

Almost surely, 2^212835517568 is an apocalyptic number.

It is an amenable number.

212835517568 is a deficient number, since it is larger than the sum of its proper divisors (211172740342).

212835517568 is an equidigital number, since it uses as much as digits as its factorization.

212835517568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662777495 (or 1662777483 counting only the distinct ones).

The product of its digits is 4032000, while the sum is 53.

The spelling of 212835517568 in words is "two hundred twelve billion, eight hundred thirty-five million, five hundred seventeen thousand, five hundred sixty-eight".