12148031977 has 2 divisors, whose sum is σ = 12148031978. Its totient is φ = 12148031976.

The previous prime is 12148031941. The next prime is 12148032011. The reversal of 12148031977 is 77913084121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9924343641 + 2223688336 = 99621^2 + 47156^2 .

It is a cyclic number.

It is not a de Polignac number, because 12148031977 - 2⁷ = 12148031849 is a prime.

It is not a weakly prime, because it can be changed into another prime (12148031927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6074015988 + 6074015989.

It is an arithmetic number, because the mean of its divisors is an integer number (6074015989).

Almost surely, 2^12148031977 is an apocalyptic number.

It is an amenable number.

12148031977 is a deficient number, since it is larger than the sum of its proper divisors (1).

12148031977 is an equidigital number, since it uses as much as digits as its factorization.

12148031977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 43.

The spelling of 12148031977 in words is "twelve billion, one hundred forty-eight million, thirty-one thousand, nine hundred seventy-seven".