12173969837 has 2 divisors, whose sum is σ = 12173969838. Its totient is φ = 12173969836.

The previous prime is 12173969809. The next prime is 12173969861. The reversal of 12173969837 is 73896937121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11265911881 + 908057956 = 106141^2 + 30134^2 .

It is a cyclic number.

It is not a de Polignac number, because 12173969837 - 2³² = 7879002541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12173969737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6086984918 + 6086984919.

It is an arithmetic number, because the mean of its divisors is an integer number (6086984919).

Almost surely, 2^12173969837 is an apocalyptic number.

It is an amenable number.

12173969837 is a deficient number, since it is larger than the sum of its proper divisors (1).

12173969837 is an equidigital number, since it uses as much as digits as its factorization.

12173969837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 56.

The spelling of 12173969837 in words is "twelve billion, one hundred seventy-three million, nine hundred sixty-nine thousand, eight hundred thirty-seven".