218439752130 has 32 divisors (see below), whose sum is σ = 582506006400. Its totient is φ = 58250600496.

The previous prime is 218439752081. The next prime is 218439752131. The reversal of 218439752130 is 31257934812.

It is a happy number.

218439752130 is a `hidden beast` number, since 2 + 1 + 8 + 4 + 3 + 97 + 521 + 30 = 666.

218439752130 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (218439752131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404517790 + ... + 404518329.

It is an arithmetic number, because the mean of its divisors is an integer number (18203312700).

Almost surely, 2^218439752130 is an apocalyptic number.

218439752130 is an abundant number, since it is smaller than the sum of its proper divisors (364066254270).

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

218439752130 is a wasteful number, since it uses less digits than its factorization.

218439752130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809036135 (or 809036129 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 218439752130 in words is "two hundred eighteen billion, four hundred thirty-nine million, seven hundred fifty-two thousand, one hundred thirty".