12426407342537 has 2 divisors, whose sum is σ = 12426407342538. Its totient is φ = 12426407342536.

The previous prime is 12426407342533. The next prime is 12426407342603. The reversal of 12426407342537 is 73524370462421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9253648404361 + 3172758938176 = 3041981^2 + 1781224^2 .

It is a cyclic number.

It is not a de Polignac number, because 12426407342537 - 2² = 12426407342533 is a prime.

It is not a weakly prime, because it can be changed into another prime (12426407342533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6213203671268 + 6213203671269.

It is an arithmetic number, because the mean of its divisors is an integer number (6213203671269).

Almost surely, 2^{12426407342537} is an apocalyptic number.

It is an amenable number.

12426407342537 is a deficient number, since it is larger than the sum of its proper divisors (1).

12426407342537 is an equidigital number, since it uses as much as digits as its factorization.

12426407342537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 50.

The spelling of 12426407342537 in words is "twelve trillion, four hundred twenty-six billion, four hundred seven million, three hundred forty-two thousand, five hundred thirty-seven".