12612171054 has 64 divisors (see below), whose sum is σ = 29719872000. Its totient is φ = 3566271744.

The previous prime is 12612171031. The next prime is 12612171059. The reversal of 12612171054 is 45017121621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12612171059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168037 + ... + 231215.

It is an arithmetic number, because the mean of its divisors is an integer number (464373000).

Almost surely, 2^12612171054 is an apocalyptic number.

12612171054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12612171054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14859936000).

12612171054 is an abundant number, since it is smaller than the sum of its proper divisors (17107700946).

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

12612171054 is an equidigital number, since it uses as much as digits as its factorization.

12612171054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63302 (or 63288 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

Adding to 12612171054 its reverse (45017121621), we get a palindrome (57629292675).

The spelling of 12612171054 in words is "twelve billion, six hundred twelve million, one hundred seventy-one thousand, fifty-four".