12555361163 has 2 divisors, whose sum is σ = 12555361164. Its totient is φ = 12555361162.

The previous prime is 12555361157. The next prime is 12555361199. The reversal of 12555361163 is 36116355521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12555361163 - 2⁸ = 12555360907 is a prime.

It is not a weakly prime, because it can be changed into another prime (12555361103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6277680581 + 6277680582.

It is an arithmetic number, because the mean of its divisors is an integer number (6277680582).

Almost surely, 2^12555361163 is an apocalyptic number.

12555361163 is a deficient number, since it is larger than the sum of its proper divisors (1).

12555361163 is an equidigital number, since it uses as much as digits as its factorization.

12555361163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81000, while the sum is 38.

The spelling of 12555361163 in words is "twelve billion, five hundred fifty-five million, three hundred sixty-one thousand, one hundred sixty-three".