218009510472 has 32 divisors (see below), whose sum is σ = 586948682880. Its totient is φ = 67079849280.

The previous prime is 218009510471. The next prime is 218009510489. The reversal of 218009510472 is 274015900812.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 218009510472.

It is not an unprimeable number, because it can be changed into a prime (218009510471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349373904 + ... + 349374527.

It is an arithmetic number, because the mean of its divisors is an integer number (18342146340).

Almost surely, 2^218009510472 is an apocalyptic number.

It is an amenable number.

218009510472 is an abundant number, since it is smaller than the sum of its proper divisors (368939172408).

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

218009510472 is a wasteful number, since it uses less digits than its factorization.

218009510472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698748453 (or 698748449 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 218009510472 in words is "two hundred eighteen billion, nine million, five hundred ten thousand, four hundred seventy-two".