12001403613 has 4 divisors (see below), whose sum is σ = 16001871488. Its totient is φ = 8000935740.

The previous prime is 12001403551. The next prime is 12001403629. The reversal of 12001403613 is 31630410021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12001403613 - 2⁶ = 12001403549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12001403613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001403633) 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, 2000233933 + ... + 2000233938.

It is an arithmetic number, because the mean of its divisors is an integer number (4000467872).

Almost surely, 2^12001403613 is an apocalyptic number.

It is an amenable number.

12001403613 is a deficient number, since it is larger than the sum of its proper divisors (4000467875).

12001403613 is an equidigital number, since it uses as much as digits as its factorization.

12001403613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000467874.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 12001403613 its reverse (31630410021), we get a palindrome (43631813634).

The spelling of 12001403613 in words is "twelve billion, one million, four hundred three thousand, six hundred thirteen".