12158391996799 has 4 divisors (see below), whose sum is σ = 12209263930080. Its totient is φ = 12107520063520.

The previous prime is 12158391996781. The next prime is 12158391996827. The reversal of 12158391996799 is 99769919385121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12158391996799 - 2¹⁵ = 12158391964031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12158391996749) 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, 25435966282 + ... + 25435966759.

It is an arithmetic number, because the mean of its divisors is an integer number (3052315982520).

Almost surely, 2^{12158391996799} is an apocalyptic number.

12158391996799 is a deficient number, since it is larger than the sum of its proper divisors (50871933281).

12158391996799 is an equidigital number, since it uses as much as digits as its factorization.

12158391996799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50871933280.

The product of its digits is 595213920, while the sum is 79.

The spelling of 12158391996799 in words is "twelve trillion, one hundred fifty-eight billion, three hundred ninety-one million, nine hundred ninety-six thousand, seven hundred ninety-nine".