12555956683 has 2 divisors, whose sum is σ = 12555956684. Its totient is φ = 12555956682.

The previous prime is 12555956671. The next prime is 12555956687. The reversal of 12555956683 is 38665955521.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (38665955521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12555956683 is a prime.

It is not a weakly prime, because it can be changed into another prime (12555956687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6277978341 + 6277978342.

It is an arithmetic number, because the mean of its divisors is an integer number (6277978342).

Almost surely, 2^12555956683 is an apocalyptic number.

12555956683 is a deficient number, since it is larger than the sum of its proper divisors (1).

12555956683 is an equidigital number, since it uses as much as digits as its factorization.

12555956683 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9720000, while the sum is 55.

The spelling of 12555956683 in words is "twelve billion, five hundred fifty-five million, nine hundred fifty-six thousand, six hundred eighty-three".