12158613626 has 16 divisors (see below), whose sum is σ = 18414011880. Its totient is φ = 6020663040.

The previous prime is 12158613619. The next prime is 12158613637. The reversal of 12158613626 is 62631685121.

It can be written as a sum of positive squares in 4 ways, for example, as 12155283001 + 3330625 = 110251^2 + 1825^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 488606 + ... + 512886.

Almost surely, 2^12158613626 is an apocalyptic number.

12158613626 is a deficient number, since it is larger than the sum of its proper divisors (6255398254).

12158613626 is a wasteful number, since it uses less digits than its factorization.

12158613626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26689.

The product of its digits is 103680, while the sum is 41.

The spelling of 12158613626 in words is "twelve billion, one hundred fifty-eight million, six hundred thirteen thousand, six hundred twenty-six".