212743863572 has 24 divisors (see below), whose sum is σ = 394930587240. Its totient is φ = 99929687040.

The previous prime is 212743863571. The next prime is 212743863637. The reversal of 212743863572 is 275368347212.

It can be written as a sum of positive squares in 4 ways, for example, as 40673208976 + 172070654596 = 201676^2 + 414814^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212743863572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212743863571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2854697 + ... + 2928272.

It is an arithmetic number, because the mean of its divisors is an integer number (16455441135).

Almost surely, 2^212743863572 is an apocalyptic number.

It is an amenable number.

212743863572 is a deficient number, since it is larger than the sum of its proper divisors (182186723668).

212743863572 is a wasteful number, since it uses less digits than its factorization.

212743863572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5783531 (or 5783529 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 50.

The spelling of 212743863572 in words is "two hundred twelve billion, seven hundred forty-three million, eight hundred sixty-three thousand, five hundred seventy-two".