218060752240 has 40 divisors (see below), whose sum is σ = 511642565280. Its totient is φ = 86424074496.

The previous prime is 218060752193. The next prime is 218060752277. The reversal of 218060752240 is 42257060812.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 218060752240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12494764 + ... + 12512203.

It is an arithmetic number, because the mean of its divisors is an integer number (12791064132).

Almost surely, 2^218060752240 is an apocalyptic number.

218060752240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

218060752240 is an abundant number, since it is smaller than the sum of its proper divisors (293581813040).

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

218060752240 is a wasteful number, since it uses less digits than its factorization.

218060752240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25007089 (or 25007083 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 218060752240 in words is "two hundred eighteen billion, sixty million, seven hundred fifty-two thousand, two hundred forty".