11720012935218 has 32 divisors (see below), whose sum is σ = 26792599340160. Its totient is φ = 3348075331200.

The previous prime is 11720012935187. The next prime is 11720012935231. The reversal of 11720012935218 is 81253921002711.

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

It is a self number, because there is not a number n which added to its sum of digits gives 11720012935218.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20539923 + ... + 21102806.

It is an arithmetic number, because the mean of its divisors is an integer number (837268729380).

Almost surely, 2^{11720012935218} is an apocalyptic number.

11720012935218 is an abundant number, since it is smaller than the sum of its proper divisors (15072586404942).

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

11720012935218 is a wasteful number, since it uses less digits than its factorization.

11720012935218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41649442.

The product of its (nonzero) digits is 60480, while the sum is 42.

Adding to 11720012935218 its reverse (81253921002711), we get a palindrome (92973933937929).

The spelling of 11720012935218 in words is "eleven trillion, seven hundred twenty billion, twelve million, nine hundred thirty-five thousand, two hundred eighteen".