12155763161 has 2 divisors, whose sum is σ = 12155763162. Its totient is φ = 12155763160.

The previous prime is 12155763131. The next prime is 12155763211. The reversal of 12155763161 is 16136755121.

It is a happy number.

12155763161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11999887936 + 155875225 = 109544^2 + 12485^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12155763161 is a prime.

It is not a weakly prime, because it can be changed into another prime (12155763131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6077881580 + 6077881581.

It is an arithmetic number, because the mean of its divisors is an integer number (6077881581).

Almost surely, 2^12155763161 is an apocalyptic number.

It is an amenable number.

12155763161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12155763161 is an equidigital number, since it uses as much as digits as its factorization.

12155763161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 38.

The spelling of 12155763161 in words is "twelve billion, one hundred fifty-five million, seven hundred sixty-three thousand, one hundred sixty-one".