213786606236 has 36 divisors (see below), whose sum is σ = 458114164200. Its totient is φ = 86800575456.

The previous prime is 213786606221. The next prime is 213786606269. The reversal of 213786606236 is 632606687312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28700171 + ... + 28707618.

It is an arithmetic number, because the mean of its divisors is an integer number (12725393450).

Almost surely, 2^213786606236 is an apocalyptic number.

It is an amenable number.

213786606236 is an abundant number, since it is smaller than the sum of its proper divisors (244327557964).

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

213786606236 is a wasteful number, since it uses less digits than its factorization.

213786606236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57407826 (or 57407817 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 213786606236 in words is "two hundred thirteen billion, seven hundred eighty-six million, six hundred six thousand, two hundred thirty-six".