12486138065 has 8 divisors (see below), whose sum is σ = 15500033640. Its totient is φ = 9644465152.

The previous prime is 12486138043. The next prime is 12486138079. The reversal of 12486138065 is 56083168421.

12486138065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1602641089 + 10883496976 = 40033^2 + 104324^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12486138065 - 2⁶ = 12486138001 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 43055504 + ... + 43055793.

It is an arithmetic number, because the mean of its divisors is an integer number (1937504205).

Almost surely, 2^12486138065 is an apocalyptic number.

It is an amenable number.

12486138065 is a deficient number, since it is larger than the sum of its proper divisors (3013895575).

12486138065 is an equidigital number, since it uses as much as digits as its factorization.

12486138065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86111331.

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 12486138065 in words is "twelve billion, four hundred eighty-six million, one hundred thirty-eight thousand, sixty-five".