12154868057 has 2 divisors, whose sum is σ = 12154868058. Its totient is φ = 12154868056.

The previous prime is 12154868053. The next prime is 12154868083. The reversal of 12154868057 is 75086845121.

12154868057 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., 8523720976 + 3631147081 = 92324^2 + 60259^2 .

It is a cyclic number.

It is not a de Polignac number, because 12154868057 - 2² = 12154868053 is a prime.

It is not a weakly prime, because it can be changed into another prime (12154868051) 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, 6077434028 + 6077434029.

It is an arithmetic number, because the mean of its divisors is an integer number (6077434029).

Almost surely, 2^12154868057 is an apocalyptic number.

It is an amenable number.

12154868057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12154868057 is an equidigital number, since it uses as much as digits as its factorization.

12154868057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 537600, while the sum is 47.

The spelling of 12154868057 in words is "twelve billion, one hundred fifty-four million, eight hundred sixty-eight thousand, fifty-seven".