218445210816 has 56 divisors (see below), whose sum is σ = 660536712960. Its totient is φ = 62412916992.

The previous prime is 218445210779. The next prime is 218445210853. The reversal of 218445210816 is 618012544812.

218445210816 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (218445210779) and next prime (218445210853).

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81265476 + ... + 81268163.

Almost surely, 2^218445210816 is an apocalyptic number.

It is an amenable number.

218445210816 is an abundant number, since it is smaller than the sum of its proper divisors (442091502144).

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

218445210816 is a wasteful number, since it uses less digits than its factorization.

218445210816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162533661 (or 162533651 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 42.

The spelling of 218445210816 in words is "two hundred eighteen billion, four hundred forty-five million, two hundred ten thousand, eight hundred sixteen".