213435868408 has 64 divisors (see below), whose sum is σ = 481180593600. Its totient is φ = 86829511680.

The previous prime is 213435868381. The next prime is 213435868447. The reversal of 213435868408 is 804868534312.

213435868408 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1171263 + ... + 1341166.

It is an arithmetic number, because the mean of its divisors is an integer number (7518446775).

Almost surely, 2^213435868408 is an apocalyptic number.

213435868408 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

213435868408 is an abundant number, since it is smaller than the sum of its proper divisors (267744725192).

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

213435868408 is a wasteful number, since it uses less digits than its factorization.

213435868408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2512520 (or 2512516 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 52.

The spelling of 213435868408 in words is "two hundred thirteen billion, four hundred thirty-five million, eight hundred sixty-eight thousand, four hundred eight".