12603630621 has 4 divisors (see below), whose sum is σ = 16804840832. Its totient is φ = 8402420412.

The previous prime is 12603630607. The next prime is 12603630623.

12603630621 is nontrivially palindromic in base 10.

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 12603630621 - 2¹⁴ = 12603614237 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 (12603630623) 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, 2100605101 + ... + 2100605106.

It is an arithmetic number, because the mean of its divisors is an integer number (4201210208).

Almost surely, 2^12603630621 is an apocalyptic number.

It is an amenable number.

12603630621 is a deficient number, since it is larger than the sum of its proper divisors (4201210211).

12603630621 is an equidigital number, since it uses as much as digits as its factorization.

12603630621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4201210210.

The product of its (nonzero) digits is 7776, while the sum is 30.

The spelling of 12603630621 in words is "twelve billion, six hundred three million, six hundred thirty thousand, six hundred twenty-one".