12170907643 has 2 divisors, whose sum is σ = 12170907644. Its totient is φ = 12170907642.

The previous prime is 12170907641. The next prime is 12170907649. The reversal of 12170907643 is 34670907121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12170907643 - 2¹ = 12170907641 is a prime.

Together with 12170907641, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12170907596 and 12170907605.

It is not a weakly prime, because it can be changed into another prime (12170907641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6085453821 + 6085453822.

It is an arithmetic number, because the mean of its divisors is an integer number (6085453822).

Almost surely, 2^12170907643 is an apocalyptic number.

12170907643 is a deficient number, since it is larger than the sum of its proper divisors (1).

12170907643 is an equidigital number, since it uses as much as digits as its factorization.

12170907643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The spelling of 12170907643 in words is "twelve billion, one hundred seventy million, nine hundred seven thousand, six hundred forty-three".