12173634071 has 4 divisors (see below), whose sum is σ = 12244002072. Its totient is φ = 12103266072.

The previous prime is 12173634061. The next prime is 12173634073. The reversal of 12173634071 is 17043637121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12173634071 - 2²² = 12169439767 is a prime.

It is a super-2 number, since 2×12173634071² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12173634073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35183741 + ... + 35184086.

It is an arithmetic number, because the mean of its divisors is an integer number (3061000518).

Almost surely, 2^12173634071 is an apocalyptic number.

12173634071 is a deficient number, since it is larger than the sum of its proper divisors (70368001).

12173634071 is an equidigital number, since it uses as much as digits as its factorization.

12173634071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70368000.

The product of its (nonzero) digits is 21168, while the sum is 35.

The spelling of 12173634071 in words is "twelve billion, one hundred seventy-three million, six hundred thirty-four thousand, seventy-one".