213664243000 has 128 divisors (see below), whose sum is σ = 551567802240. Its totient is φ = 76967040000.

The previous prime is 213664242971. The next prime is 213664243019. The reversal of 213664243000 is 342466312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 332565 + ... + 733435.

It is an arithmetic number, because the mean of its divisors is an integer number (4309123455).

Almost surely, 2^213664243000 is an apocalyptic number.

213664243000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213664243000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275783901120).

213664243000 is an abundant number, since it is smaller than the sum of its proper divisors (337903559240).

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

213664243000 is a wasteful number, since it uses less digits than its factorization.

213664243000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400946 (or 400932 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

The spelling of 213664243000 in words is "two hundred thirteen billion, six hundred sixty-four million, two hundred forty-three thousand".