12651566737 has 16 divisors (see below), whose sum is σ = 13616128512. Its totient is φ = 11726651200.

The previous prime is 12651566729. The next prime is 12651566743. The reversal of 12651566737 is 73766515621.

12651566737 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12651566737 - 2³ = 12651566729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12651566797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51243 + ... + 167119.

It is an arithmetic number, because the mean of its divisors is an integer number (851008032).

Almost surely, 2^12651566737 is an apocalyptic number.

It is an amenable number.

12651566737 is a deficient number, since it is larger than the sum of its proper divisors (964561775).

12651566737 is a wasteful number, since it uses less digits than its factorization.

12651566737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116048.

The product of its digits is 1587600, while the sum is 49.

The spelling of 12651566737 in words is "twelve billion, six hundred fifty-one million, five hundred sixty-six thousand, seven hundred thirty-seven".