12555205145 has 16 divisors (see below), whose sum is σ = 17619000960. Its totient is φ = 8409066624.

The previous prime is 12555205093. The next prime is 12555205183. The reversal of 12555205145 is 54150255521.

12555205145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12555205145 - 2²⁰ = 12554156569 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4169660 + ... + 4172669.

It is an arithmetic number, because the mean of its divisors is an integer number (1101187560).

Almost surely, 2^12555205145 is an apocalyptic number.

It is an amenable number.

12555205145 is a deficient number, since it is larger than the sum of its proper divisors (5063795815).

12555205145 is an equidigital number, since it uses as much as digits as its factorization.

12555205145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8342384.

The product of its (nonzero) digits is 50000, while the sum is 35.

The spelling of 12555205145 in words is "twelve billion, five hundred fifty-five million, two hundred five thousand, one hundred forty-five".