2218618428080 has 80 divisors (see below), whose sum is σ = 5184022201344. Its totient is φ = 883022058240.

The previous prime is 2218618428079. The next prime is 2218618428167. The reversal of 2218618428080 is 808248168122.

It is a tau number, because it is divible by the number of its divisors (80).

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, 79372667 + ... + 79400613.

Almost surely, 2^{2218618428080} is an apocalyptic number.

2218618428080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2218618428080 is an abundant number, since it is smaller than the sum of its proper divisors (2965403773264).

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

2218618428080 is a wasteful number, since it uses less digits than its factorization.

2218618428080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32874 (or 32868 counting only the distinct ones).

The product of its (nonzero) digits is 786432, while the sum is 50.

The spelling of 2218618428080 in words is "two trillion, two hundred eighteen billion, six hundred eighteen million, four hundred twenty-eight thousand, eighty".