123432717172 has 12 divisors (see below), whose sum is σ = 218026015200. Its totient is φ = 61139569976.

The previous prime is 123432717127. The next prime is 123432717179. The reversal of 123432717172 is 271717234321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123432717179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144196672 + ... + 144197527.

It is an arithmetic number, because the mean of its divisors is an integer number (18168834600).

Almost surely, 2^123432717172 is an apocalyptic number.

It is an amenable number.

123432717172 is a deficient number, since it is larger than the sum of its proper divisors (94593298028).

123432717172 is a wasteful number, since it uses less digits than its factorization.

123432717172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288394310 (or 288394308 counting only the distinct ones).

The product of its digits is 98784, while the sum is 40.

The spelling of 123432717172 in words is "one hundred twenty-three billion, four hundred thirty-two million, seven hundred seventeen thousand, one hundred seventy-two".