213550515500 has 96 divisors (see below), whose sum is σ = 533340487680. Its totient is φ = 73173585600.

The previous prime is 213550515473. The next prime is 213550515533. The reversal of 213550515500 is 5515055312.

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 31 ways as a sum of consecutive naturals, for example, 6139157 + ... + 6173843.

It is an arithmetic number, because the mean of its divisors is an integer number (5555630080).

Almost surely, 2^213550515500 is an apocalyptic number.

213550515500 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 213550515500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266670243840).

213550515500 is an abundant number, since it is smaller than the sum of its proper divisors (319789972180).

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

213550515500 is a wasteful number, since it uses less digits than its factorization.

213550515500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36472 (or 36460 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 32.

The spelling of 213550515500 in words is "two hundred thirteen billion, five hundred fifty million, five hundred fifteen thousand, five hundred".