12170170050505 has 16 divisors (see below), whose sum is σ = 14626426210704. Its totient is φ = 9721322311680.

The previous prime is 12170170050499. The next prime is 12170170050517. The reversal of 12170170050505 is 50505007107121.

12170170050505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 1925331078969 + 10244838971536 = 1387563^2 + 3200756^2 .

It is not a de Polignac number, because 12170170050505 - 2¹³ = 12170170042313 is a prime.

It is a super-2 number, since 2×12170170050505² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138314725 + ... + 138402685.

It is an arithmetic number, because the mean of its divisors is an integer number (914151638169).

Almost surely, 2^{12170170050505} is an apocalyptic number.

It is an amenable number.

12170170050505 is a deficient number, since it is larger than the sum of its proper divisors (2456256160199).

12170170050505 is an equidigital number, since it uses as much as digits as its factorization.

12170170050505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129756.

The product of its (nonzero) digits is 12250, while the sum is 34.

Adding to 12170170050505 its reverse (50505007107121), we get a palindrome (62675177157626).

The spelling of 12170170050505 in words is "twelve trillion, one hundred seventy billion, one hundred seventy million, fifty thousand, five hundred five".