12106553939 has 2 divisors, whose sum is σ = 12106553940. Its totient is φ = 12106553938.

The previous prime is 12106553929. The next prime is 12106553951. The reversal of 12106553939 is 93935560121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12106553939 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12106553939.

It is not a weakly prime, because it can be changed into another prime (12106553929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6053276969 + 6053276970.

It is an arithmetic number, because the mean of its divisors is an integer number (6053276970).

Almost surely, 2^12106553939 is an apocalyptic number.

12106553939 is a deficient number, since it is larger than the sum of its proper divisors (1).

12106553939 is an equidigital number, since it uses as much as digits as its factorization.

12106553939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 218700, while the sum is 44.

The spelling of 12106553939 in words is "twelve billion, one hundred six million, five hundred fifty-three thousand, nine hundred thirty-nine".