12599342993 has 4 divisors (see below), whose sum is σ = 12619763940. Its totient is φ = 12578922048.

The previous prime is 12599342981. The next prime is 12599343007. The reversal of 12599342993 is 39924399521.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 226562704 + 12372780289 = 15052^2 + 111233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12599342993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12599342963) 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, 10209548 + ... + 10210781.

It is an arithmetic number, because the mean of its divisors is an integer number (3154940985).

Almost surely, 2^12599342993 is an apocalyptic number.

It is an amenable number.

12599342993 is a deficient number, since it is larger than the sum of its proper divisors (20420947).

12599342993 is an equidigital number, since it uses as much as digits as its factorization.

12599342993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20420946.

The product of its digits is 4723920, while the sum is 56.

The spelling of 12599342993 in words is "twelve billion, five hundred ninety-nine million, three hundred forty-two thousand, nine hundred ninety-three".