213829456956 has 24 divisors (see below), whose sum is σ = 507391933440. Its totient is φ = 70068409392.

The previous prime is 213829456949. The next prime is 213829456987. The reversal of 213829456956 is 659654928312.

It is a self number, because there is not a number n which added to its sum of digits gives 213829456956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151008796 + ... + 151010211.

It is an arithmetic number, because the mean of its divisors is an integer number (21141330560).

Almost surely, 2^213829456956 is an apocalyptic number.

It is an amenable number.

213829456956 is an abundant number, since it is smaller than the sum of its proper divisors (293562476484).

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

213829456956 is a wasteful number, since it uses less digits than its factorization.

213829456956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302019073 (or 302019071 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 60.

The spelling of 213829456956 in words is "two hundred thirteen billion, eight hundred twenty-nine million, four hundred fifty-six thousand, nine hundred fifty-six".