12170645497 has 2 divisors, whose sum is σ = 12170645498. Its totient is φ = 12170645496.

The previous prime is 12170645479. The next prime is 12170645503. The reversal of 12170645497 is 79454607121.

Together with previous prime (12170645479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11245329936 + 925315561 = 106044^2 + 30419^2 .

It is a cyclic number.

It is not a de Polignac number, because 12170645497 - 2³¹ = 10023161849 is a prime.

It is a super-2 number, since 2×12170645497² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12170645467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6085322748 + 6085322749.

It is an arithmetic number, because the mean of its divisors is an integer number (6085322749).

Almost surely, 2^12170645497 is an apocalyptic number.

It is an amenable number.

12170645497 is a deficient number, since it is larger than the sum of its proper divisors (1).

12170645497 is an equidigital number, since it uses as much as digits as its factorization.

12170645497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 12170645497 in words is "twelve billion, one hundred seventy million, six hundred forty-five thousand, four hundred ninety-seven".