12126444536 has 8 divisors (see below), whose sum is σ = 22737083520. Its totient is φ = 6063222264.

The previous prime is 12126444529. The next prime is 12126444541. The reversal of 12126444536 is 63544462121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 12126444536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 757902776 + ... + 757902791.

It is an arithmetic number, because the mean of its divisors is an integer number (2842135440).

Almost surely, 2^12126444536 is an apocalyptic number.

It is an amenable number.

12126444536 is a deficient number, since it is larger than the sum of its proper divisors (10610638984).

12126444536 is a wasteful number, since it uses less digits than its factorization.

12126444536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1515805573 (or 1515805569 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The spelling of 12126444536 in words is "twelve billion, one hundred twenty-six million, four hundred forty-four thousand, five hundred thirty-six".