12172868958 has 32 divisors (see below), whose sum is σ = 25257951360. Its totient is φ = 3906395360.

The previous prime is 12172868941. The next prime is 12172868959. The reversal of 12172868958 is 85986827121.

It is a junction number, because it is equal to n+sod(n) for n = 12172868898 and 12172868907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12172868959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40428 + ... + 161183.

It is an arithmetic number, because the mean of its divisors is an integer number (789310980).

Almost surely, 2^12172868958 is an apocalyptic number.

12172868958 is an abundant number, since it is smaller than the sum of its proper divisors (13085082402).

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

12172868958 is a wasteful number, since it uses less digits than its factorization.

12172868958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201992.

The product of its digits is 3870720, while the sum is 57.

The spelling of 12172868958 in words is "twelve billion, one hundred seventy-two million, eight hundred sixty-eight thousand, nine hundred fifty-eight".