12645217195 has 32 divisors (see below), whose sum is σ = 16669900800. Its totient is φ = 9151781760.

The previous prime is 12645217177. The next prime is 12645217243. The reversal of 12645217195 is 59171254621.

It is not a de Polignac number, because 12645217195 - 2¹⁷ = 12645086123 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 859350 + ... + 873940.

It is an arithmetic number, because the mean of its divisors is an integer number (520934400).

Almost surely, 2^12645217195 is an apocalyptic number.

12645217195 is a deficient number, since it is larger than the sum of its proper divisors (4024683605).

12645217195 is a wasteful number, since it uses less digits than its factorization.

12645217195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14875.

The product of its digits is 151200, while the sum is 43.

The spelling of 12645217195 in words is "twelve billion, six hundred forty-five million, two hundred seventeen thousand, one hundred ninety-five".