12917207350857 has 32 divisors (see below), whose sum is σ = 18865330894080. Its totient is φ = 7825250478080.

The previous prime is 12917207350811. The next prime is 12917207350903. The reversal of 12917207350857 is 75805370271921.

It is an interprime number because it is at equal distance from previous prime (12917207350811) and next prime (12917207350903).

It is a cyclic number.

It is not a de Polignac number, because 12917207350857 - 2⁶ = 12917207350793 is a prime.

It is a super-3 number, since 3×12917207350857³ (a number of 40 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12917207350797 and 12917207350806.

It is not an unprimeable number, because it can be changed into a prime (12917207350357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88727908 + ... + 88873370.

It is an arithmetic number, because the mean of its divisors is an integer number (589541590440).

Almost surely, 2^{12917207350857} is an apocalyptic number.

12917207350857 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12917207350857 is a deficient number, since it is larger than the sum of its proper divisors (5948123543223).

12917207350857 is a wasteful number, since it uses less digits than its factorization.

12917207350857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205553.

The product of its (nonzero) digits is 7408800, while the sum is 57.

The spelling of 12917207350857 in words is "twelve trillion, nine hundred seventeen billion, two hundred seven million, three hundred fifty thousand, eight hundred fifty-seven".