12637544839 has 2 divisors, whose sum is σ = 12637544840. Its totient is φ = 12637544838.

The previous prime is 12637544797. The next prime is 12637544849. The reversal of 12637544839 is 93844573621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12637544839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12637544849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6318772419 + 6318772420.

It is an arithmetic number, because the mean of its divisors is an integer number (6318772420).

Almost surely, 2^12637544839 is an apocalyptic number.

12637544839 is a deficient number, since it is larger than the sum of its proper divisors (1).

12637544839 is an equidigital number, since it uses as much as digits as its factorization.

12637544839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 52.

The spelling of 12637544839 in words is "twelve billion, six hundred thirty-seven million, five hundred forty-four thousand, eight hundred thirty-nine".