12127661516 has 12 divisors (see below), whose sum is σ = 21224707560. Its totient is φ = 6063459360.

The previous prime is 12127661479. The next prime is 12127661593. The reversal of 12127661516 is 61516672121.

It is a self number, because there is not a number n which added to its sum of digits gives 12127661516.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11450 + ... + 156161.

It is an arithmetic number, because the mean of its divisors is an integer number (1768725630).

Almost surely, 2^12127661516 is an apocalyptic number.

It is an amenable number.

12127661516 is a deficient number, since it is larger than the sum of its proper divisors (9097046044).

12127661516 is a wasteful number, since it uses less digits than its factorization.

12127661516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185704 (or 185702 counting only the distinct ones).

The product of its digits is 30240, while the sum is 38.

The spelling of 12127661516 in words is "twelve billion, one hundred twenty-seven million, six hundred sixty-one thousand, five hundred sixteen".