12136461205 has 32 divisors (see below), whose sum is σ = 16338516480. Its totient is φ = 8576709120.

The previous prime is 12136461203. The next prime is 12136461287. The reversal of 12136461205 is 50216463121.

It is a happy number.

It is not a de Polignac number, because 12136461205 - 2¹ = 12136461203 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12136461203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1740516 + ... + 1747474.

It is an arithmetic number, because the mean of its divisors is an integer number (510578640).

Almost surely, 2^12136461205 is an apocalyptic number.

It is an amenable number.

12136461205 is a deficient number, since it is larger than the sum of its proper divisors (4202055275).

12136461205 is a wasteful number, since it uses less digits than its factorization.

12136461205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7869.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 12136461205 in words is "twelve billion, one hundred thirty-six million, four hundred sixty-one thousand, two hundred five".