12119985636 has 96 divisors (see below), whose sum is σ = 31387668480. Its totient is φ = 3609091200.

The previous prime is 12119985571. The next prime is 12119985637. The reversal of 12119985636 is 63658991121.

It is not an unprimeable number, because it can be changed into a prime (12119985637) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4234846 + ... + 4237706.

It is an arithmetic number, because the mean of its divisors is an integer number (326954880).

Almost surely, 2^12119985636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12119985636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15693834240).

12119985636 is an abundant number, since it is smaller than the sum of its proper divisors (19267682844).

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

12119985636 is a wasteful number, since it uses less digits than its factorization.

12119985636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3425 (or 3423 counting only the distinct ones).

The product of its digits is 699840, while the sum is 51.

The spelling of 12119985636 in words is "twelve billion, one hundred nineteen million, nine hundred eighty-five thousand, six hundred thirty-six".