12917888805 has 8 divisors (see below), whose sum is σ = 20668622112. Its totient is φ = 6889540688.

The previous prime is 12917888791. The next prime is 12917888827. The reversal of 12917888805 is 50888871921.

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

It is a cyclic number.

It is not a de Polignac number, because 12917888805 - 2⁷ = 12917888677 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430596279 + ... + 430596308.

It is an arithmetic number, because the mean of its divisors is an integer number (2583577764).

Almost surely, 2^12917888805 is an apocalyptic number.

12917888805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12917888805 is a deficient number, since it is larger than the sum of its proper divisors (7750733307).

12917888805 is an equidigital number, since it uses as much as digits as its factorization.

12917888805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861192595.

The product of its (nonzero) digits is 2580480, while the sum is 57.

The spelling of 12917888805 in words is "twelve billion, nine hundred seventeen million, eight hundred eighty-eight thousand, eight hundred five".