12446137736 has 8 divisors (see below), whose sum is σ = 23336508270. Its totient is φ = 6223068864.

The previous prime is 12446137681. The next prime is 12446137793. The reversal of 12446137736 is 63773164421.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10425635236 + 2020502500 = 102106^2 + 44950^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 777883601 + ... + 777883616.

Almost surely, 2^12446137736 is an apocalyptic number.

It is an amenable number.

12446137736 is a deficient number, since it is larger than the sum of its proper divisors (10890370534).

12446137736 is a wasteful number, since it uses less digits than its factorization.

12446137736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555767223 (or 1555767219 counting only the distinct ones).

The product of its digits is 508032, while the sum is 44.

The spelling of 12446137736 in words is "twelve billion, four hundred forty-six million, one hundred thirty-seven thousand, seven hundred thirty-six".