12127858636 has 24 divisors (see below), whose sum is σ = 21390518016. Its totient is φ = 6016417680.

The previous prime is 12127858627. The next prime is 12127858651. The reversal of 12127858636 is 63685872121.

It is a happy number.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12127858636.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348801 + ... + 381991.

It is an arithmetic number, because the mean of its divisors is an integer number (891271584).

Almost surely, 2^12127858636 is an apocalyptic number.

It is an amenable number.

12127858636 is a deficient number, since it is larger than the sum of its proper divisors (9262659380).

12127858636 is a wasteful number, since it uses less digits than its factorization.

12127858636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33909 (or 33907 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The spelling of 12127858636 in words is "twelve billion, one hundred twenty-seven million, eight hundred fifty-eight thousand, six hundred thirty-six".