12612171055 has 32 divisors (see below), whose sum is σ = 17853696000. Its totient is φ = 8449221120.

The previous prime is 12612171031. The next prime is 12612171059. The reversal of 12612171055 is 55017121621.

It is not a de Polignac number, because 12612171055 - 2⁷ = 12612170927 is a prime.

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 polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99555 + ... + 187444.

It is an arithmetic number, because the mean of its divisors is an integer number (557928000).

Almost surely, 2^12612171055 is an apocalyptic number.

12612171055 is a deficient number, since it is larger than the sum of its proper divisors (5241524945).

12612171055 is a wasteful number, since it uses less digits than its factorization.

12612171055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287079.

The product of its (nonzero) digits is 4200, while the sum is 31.

Adding to 12612171055 its reverse (55017121621), we get a palindrome (67629292676).

The spelling of 12612171055 in words is "twelve billion, six hundred twelve million, one hundred seventy-one thousand, fifty-five".