12161057387 has 2 divisors, whose sum is σ = 12161057388. Its totient is φ = 12161057386.

The previous prime is 12161057357. The next prime is 12161057393. The reversal of 12161057387 is 78375016121.

It is a happy number.

12161057387 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12161057387 - 2⁶ = 12161057323 is a prime.

It is not a weakly prime, because it can be changed into another prime (12161057327) 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, 6080528693 + 6080528694.

It is an arithmetic number, because the mean of its divisors is an integer number (6080528694).

Almost surely, 2^12161057387 is an apocalyptic number.

12161057387 is a deficient number, since it is larger than the sum of its proper divisors (1).

12161057387 is an equidigital number, since it uses as much as digits as its factorization.

12161057387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 12161057387 in words is "twelve billion, one hundred sixty-one million, fifty-seven thousand, three hundred eighty-seven".