218032939530 has 192 divisors, whose sum is σ = 703967846400. Its totient is φ = 45690065280.

The previous prime is 218032939519. The next prime is 218032939543. The reversal of 218032939530 is 35939230812.

218032939530 is a `hidden beast` number, since 2 + 1 + 80 + 3 + 2 + 9 + 39 + 530 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 77281 + ... + 664859.

It is an arithmetic number, because the mean of its divisors is an integer number (3666499200).

Almost surely, 2^218032939530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218032939530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351983923200).

218032939530 is an abundant number, since it is smaller than the sum of its proper divisors (485934906870).

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

218032939530 is a wasteful number, since it uses less digits than its factorization.

218032939530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587649 (or 587646 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 218032939530 in words is "two hundred eighteen billion, thirty-two million, nine hundred thirty-nine thousand, five hundred thirty".