12156433061 has 2 divisors, whose sum is σ = 12156433062. Its totient is φ = 12156433060.

The previous prime is 12156433039. The next prime is 12156433099. The reversal of 12156433061 is 16033465121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7520184961 + 4636248100 = 86719^2 + 68090^2 .

It is an emirp because it is prime and its reverse (16033465121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12156433061 - 2¹⁰ = 12156432037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12156430061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6078216530 + 6078216531.

It is an arithmetic number, because the mean of its divisors is an integer number (6078216531).

Almost surely, 2^12156433061 is an apocalyptic number.

It is an amenable number.

12156433061 is a deficient number, since it is larger than the sum of its proper divisors (1).

12156433061 is an equidigital number, since it uses as much as digits as its factorization.

12156433061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 12156433061 its reverse (16033465121), we get a palindrome (28189898182).

The spelling of 12156433061 in words is "twelve billion, one hundred fifty-six million, four hundred thirty-three thousand, sixty-one".