12618493443658 has 8 divisors (see below), whose sum is σ = 18995098672260. Its totient is φ = 6286793886240.

The previous prime is 12618493443641. The next prime is 12618493443659. The reversal of 12618493443658 is 85634439481621.

It can be written as a sum of positive squares in 2 ways, for example, as 12103461874009 + 515031569649 = 3479003^2 + 717657^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 12618493443658.

It is not an unprimeable number, because it can be changed into a prime (12618493443659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11226417093 + ... + 11226418216.

Almost surely, 2^{12618493443658} is an apocalyptic number.

12618493443658 is a deficient number, since it is larger than the sum of its proper divisors (6376605228602).

12618493443658 is a wasteful number, since it uses less digits than its factorization.

12618493443658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22452835592.

The product of its digits is 119439360, while the sum is 64.

The spelling of 12618493443658 in words is "twelve trillion, six hundred eighteen billion, four hundred ninety-three million, four hundred forty-three thousand, six hundred fifty-eight".