12357985171 has 12 divisors (see below), whose sum is σ = 14387733432. Its totient is φ = 10583629728.

The previous prime is 12357985103. The next prime is 12357985201. The reversal of 12357985171 is 17158975321.

It is not a de Polignac number, because 12357985171 - 2²⁷ = 12223767443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12357985271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47245 + ... + 164158.

It is an arithmetic number, because the mean of its divisors is an integer number (1198977786).

Almost surely, 2^12357985171 is an apocalyptic number.

12357985171 is a deficient number, since it is larger than the sum of its proper divisors (2029748261).

12357985171 is a wasteful number, since it uses less digits than its factorization.

12357985171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212610 (or 212603 counting only the distinct ones).

The product of its digits is 529200, while the sum is 49.

The spelling of 12357985171 in words is "twelve billion, three hundred fifty-seven million, nine hundred eighty-five thousand, one hundred seventy-one".