12637502651243 has 2 divisors, whose sum is σ = 12637502651244. Its totient is φ = 12637502651242.

The previous prime is 12637502651237. The next prime is 12637502651281. The reversal of 12637502651243 is 34215620573621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12637502651243 - 2⁴ = 12637502651227 is a prime.

It is not a weakly prime, because it can be changed into another prime (12637502651203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6318751325621 + 6318751325622.

It is an arithmetic number, because the mean of its divisors is an integer number (6318751325622).

Almost surely, 2^{12637502651243} is an apocalyptic number.

12637502651243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12637502651243 is an equidigital number, since it uses as much as digits as its factorization.

12637502651243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1814400, while the sum is 47.

The spelling of 12637502651243 in words is "twelve trillion, six hundred thirty-seven billion, five hundred two million, six hundred fifty-one thousand, two hundred forty-three".