213721882536 has 16 divisors (see below), whose sum is σ = 534304706400. Its totient is φ = 71240627504.

The previous prime is 213721882529. The next prime is 213721882541. The reversal of 213721882536 is 635288127312.

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, 4452539196 + ... + 4452539243.

It is an arithmetic number, because the mean of its divisors is an integer number (33394044150).

Almost surely, 2^213721882536 is an apocalyptic number.

It is an amenable number.

213721882536 is an abundant number, since it is smaller than the sum of its proper divisors (320582823864).

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

213721882536 is a wasteful number, since it uses less digits than its factorization.

213721882536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8905078448 (or 8905078444 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The spelling of 213721882536 in words is "two hundred thirteen billion, seven hundred twenty-one million, eight hundred eighty-two thousand, five hundred thirty-six".