7842218536812 has 48 divisors (see below), whose sum is σ = 20081543876352. Its totient is φ = 2362199734080.

The previous prime is 7842218536783. The next prime is 7842218536813. The reversal of 7842218536812 is 2186358122487.

It is not an unprimeable number, because it can be changed into a prime (7842218536813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177854443 + ... + 177898530.

It is an arithmetic number, because the mean of its divisors is an integer number (418365497424).

Almost surely, 2^{7842218536812} is an apocalyptic number.

It is an amenable number.

7842218536812 is an abundant number, since it is smaller than the sum of its proper divisors (12239325339540).

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

7842218536812 is a wasteful number, since it uses less digits than its factorization.

7842218536812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355753158 (or 355753156 counting only the distinct ones).

The product of its digits is 10321920, while the sum is 57.

The spelling of 7842218536812 in words is "seven trillion, eight hundred forty-two billion, two hundred eighteen million, five hundred thirty-six thousand, eight hundred twelve".