12456423737 has 16 divisors (see below), whose sum is σ = 13330982160. Its totient is φ = 11616288768.

The previous prime is 12456423667. The next prime is 12456423773. The reversal of 12456423737 is 73732465421.

It can be written as a sum of positive squares in 8 ways, for example, as 1999520656 + 10456903081 = 44716^2 + 102259^2 .

It is a cyclic number.

It is not a de Polignac number, because 12456423737 - 2¹² = 12456419641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12456423037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104633 + ... + 189369.

It is an arithmetic number, because the mean of its divisors is an integer number (833186385).

Almost surely, 2^12456423737 is an apocalyptic number.

It is an amenable number.

12456423737 is a deficient number, since it is larger than the sum of its proper divisors (874558423).

12456423737 is a wasteful number, since it uses less digits than its factorization.

12456423737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84940.

The product of its digits is 846720, while the sum is 44.

The spelling of 12456423737 in words is "twelve billion, four hundred fifty-six million, four hundred twenty-three thousand, seven hundred thirty-seven".