12269638547 has 2 divisors, whose sum is σ = 12269638548. Its totient is φ = 12269638546.

The previous prime is 12269638501. The next prime is 12269638571. The reversal of 12269638547 is 74583696221.

It is a strong prime.

It is an emirp because it is prime and its reverse (74583696221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12269638547 is a prime.

It is not a weakly prime, because it can be changed into another prime (12269638847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6134819273 + 6134819274.

It is an arithmetic number, because the mean of its divisors is an integer number (6134819274).

Almost surely, 2^12269638547 is an apocalyptic number.

12269638547 is a deficient number, since it is larger than the sum of its proper divisors (1).

12269638547 is an equidigital number, since it uses as much as digits as its factorization.

12269638547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 53.

The spelling of 12269638547 in words is "twelve billion, two hundred sixty-nine million, six hundred thirty-eight thousand, five hundred forty-seven".