11999781343684 has 24 divisors (see below), whose sum is σ = 21690463673088. Its totient is φ = 5802745996320.

The previous prime is 11999781343643. The next prime is 11999781343687. The reversal of 11999781343684 is 48634318799911.

11999781343684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11999781343687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29797642 + ... + 30197665.

It is an arithmetic number, because the mean of its divisors is an integer number (903769319712).

Almost surely, 2^{11999781343684} is an apocalyptic number.

It is an amenable number.

11999781343684 is a deficient number, since it is larger than the sum of its proper divisors (9690682329404).

11999781343684 is a wasteful number, since it uses less digits than its factorization.

11999781343684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59996955 (or 59996953 counting only the distinct ones).

The product of its digits is 282175488, while the sum is 73.

The spelling of 11999781343684 in words is "eleven trillion, nine hundred ninety-nine billion, seven hundred eighty-one million, three hundred forty-three thousand, six hundred eighty-four".