2218381678152 has 64 divisors (see below), whose sum is σ = 6162440256000. Its totient is φ = 739428288192.

The previous prime is 2218381678003. The next prime is 2218381678259. The reversal of 2218381678152 is 2518761838122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5020174 + ... + 5444162.

It is an arithmetic number, because the mean of its divisors is an integer number (96288129000).

Almost surely, 2^{2218381678152} is an apocalyptic number.

It is an amenable number.

2218381678152 is an abundant number, since it is smaller than the sum of its proper divisors (3944058577848).

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

2218381678152 is a wasteful number, since it uses less digits than its factorization.

2218381678152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448227 (or 448217 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The spelling of 2218381678152 in words is "two trillion, two hundred eighteen billion, three hundred eighty-one million, six hundred seventy-eight thousand, one hundred fifty-two".