12220509749718 has 32 divisors (see below), whose sum is σ = 24458591520000. Its totient is φ = 4070575642016.

The previous prime is 12220509749689. The next prime is 12220509749729. The reversal of 12220509749718 is 81794790502221.

It is a happy number.

It is a Curzon number.

It is a congruent number.

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, 46881208 + ... + 47141156.

It is an arithmetic number, because the mean of its divisors is an integer number (764330985000).

Almost surely, 2^{12220509749718} is an apocalyptic number.

12220509749718 is an abundant number, since it is smaller than the sum of its proper divisors (12238081770282).

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

12220509749718 is a wasteful number, since it uses less digits than its factorization.

12220509749718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265556.

The product of its (nonzero) digits is 5080320, while the sum is 57.

The spelling of 12220509749718 in words is "twelve trillion, two hundred twenty billion, five hundred nine million, seven hundred forty-nine thousand, seven hundred eighteen".