213533532680 has 64 divisors (see below), whose sum is σ = 547843973040. Its totient is φ = 74205315072.

The previous prime is 213533532679. The next prime is 213533532763. The reversal of 213533532680 is 86235335312.

It can be written as a sum of positive squares in 8 ways, for example, as 83741941924 + 129791590756 = 289382^2 + 360266^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12068849 + ... + 12086528.

Almost surely, 2^213533532680 is an apocalyptic number.

213533532680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213533532680 is an abundant number, since it is smaller than the sum of its proper divisors (334310440360).

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

213533532680 is a wasteful number, since it uses less digits than its factorization.

213533532680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24155418 (or 24155414 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 41.

Adding to 213533532680 its reverse (86235335312), we get a palindrome (299768867992).

The spelling of 213533532680 in words is "two hundred thirteen billion, five hundred thirty-three million, five hundred thirty-two thousand, six hundred eighty".