213143632452 has 72 divisors (see below), whose sum is σ = 541160984000. Its totient is φ = 70734565440.

The previous prime is 213143632439. The next prime is 213143632477. The reversal of 213143632452 is 254236341312.

213143632452 is a `hidden beast` number, since 2 + 1 + 3 + 14 + 3 + 632 + 4 + 5 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7548753 + ... + 7576935.

Almost surely, 2^213143632452 is an apocalyptic number.

It is an amenable number.

213143632452 is an abundant number, since it is smaller than the sum of its proper divisors (328017351548).

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

213143632452 is a wasteful number, since it uses less digits than its factorization.

213143632452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29113 (or 29108 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

Adding to 213143632452 its reverse (254236341312), we get a palindrome (467379973764).

The spelling of 213143632452 in words is "two hundred thirteen billion, one hundred forty-three million, six hundred thirty-two thousand, four hundred fifty-two".