12163312993 has 8 divisors (see below), whose sum is σ = 13452978728. Its totient is φ = 10924222464.

The previous prime is 12163312981. The next prime is 12163313039. The reversal of 12163312993 is 39921336121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2383685329 + 9779627664 = 48823^2 + 98892^2 .

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 12163312993 - 2²¹ = 12161215841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12163312193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12643296 + ... + 12644257.

It is an arithmetic number, because the mean of its divisors is an integer number (1681622341).

Almost surely, 2^12163312993 is an apocalyptic number.

12163312993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12163312993 is a deficient number, since it is larger than the sum of its proper divisors (1289665735).

12163312993 is a wasteful number, since it uses less digits than its factorization.

12163312993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25287603.

The product of its digits is 52488, while the sum is 40.

The spelling of 12163312993 in words is "twelve billion, one hundred sixty-three million, three hundred twelve thousand, nine hundred ninety-three".