12169175994 has 32 divisors (see below), whose sum is σ = 28633357440. Its totient is φ = 3817780416.

The previous prime is 12169175987. The next prime is 12169176001. The reversal of 12169175994 is 49957196121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12169175987) and next prime (12169176001).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 12169175994.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6627174 + ... + 6629009.

It is an arithmetic number, because the mean of its divisors is an integer number (894792420).

Almost surely, 2^12169175994 is an apocalyptic number.

12169175994 is an abundant number, since it is smaller than the sum of its proper divisors (16464181446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12169175994 is a wasteful number, since it uses less digits than its factorization.

12169175994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13256211 (or 13256205 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 54.

The spelling of 12169175994 in words is "twelve billion, one hundred sixty-nine million, one hundred seventy-five thousand, nine hundred ninety-four".