12116515747 has 4 divisors (see below), whose sum is σ = 13847446576. Its totient is φ = 10385584920.

The previous prime is 12116515717. The next prime is 12116515753. The reversal of 12116515747 is 74751561121.

It is a happy number.

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 12116515747 - 2¹¹ = 12116513699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12116515717) 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, 865465404 + ... + 865465417.

It is an arithmetic number, because the mean of its divisors is an integer number (3461861644).

Almost surely, 2^12116515747 is an apocalyptic number.

12116515747 is a deficient number, since it is larger than the sum of its proper divisors (1730930829).

12116515747 is an equidigital number, since it uses as much as digits as its factorization.

12116515747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730930828.

The product of its digits is 58800, while the sum is 40.

The spelling of 12116515747 in words is "twelve billion, one hundred sixteen million, five hundred fifteen thousand, seven hundred forty-seven".