12817950394 has 8 divisors (see below), whose sum is σ = 20357921268. Its totient is φ = 6031976640.

The previous prime is 12817950349. The next prime is 12817950421. The reversal of 12817950394 is 49305971821.

It is a happy number.

12817950394 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 2 ways, for example, as 12639380625 + 178569769 = 112425^2 + 13363^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×12817950394³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188499237 + ... + 188499304.

Almost surely, 2^12817950394 is an apocalyptic number.

12817950394 is a deficient number, since it is larger than the sum of its proper divisors (7539970874).

12817950394 is a wasteful number, since it uses less digits than its factorization.

12817950394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376998560.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 12817950394 in words is "twelve billion, eight hundred seventeen million, nine hundred fifty thousand, three hundred ninety-four".