213578065652 has 12 divisors (see below), whose sum is σ = 427156131360. Its totient is φ = 91533456696.

The previous prime is 213578065609. The next prime is 213578065669. The reversal of 213578065652 is 256560875312.

213578065652 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 213578065652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3813894002 + ... + 3813894057.

It is an arithmetic number, because the mean of its divisors is an integer number (35596344280).

Almost surely, 2^213578065652 is an apocalyptic number.

It is an amenable number.

213578065652 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

213578065652 is a wasteful number, since it uses less digits than its factorization.

213578065652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7627788070 (or 7627788068 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 50.

The spelling of 213578065652 in words is "two hundred thirteen billion, five hundred seventy-eight million, sixty-five thousand, six hundred fifty-two".