12603430901 has 4 divisors (see below), whose sum is σ = 12603657612. Its totient is φ = 12603204192.

The previous prime is 12603430883. The next prime is 12603430909. The reversal of 12603430901 is 10903430621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10903430621 = 48413 ⋅225217.

It can be written as a sum of positive squares in 2 ways, for example, as 11193428401 + 1410002500 = 105799^2 + 37550^2 .

It is a cyclic number.

It is not a de Polignac number, because 12603430901 - 2¹⁰ = 12603429877 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 (12603430909) 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, 33155 + ... + 162191.

It is an arithmetic number, because the mean of its divisors is an integer number (3150914403).

Almost surely, 2^12603430901 is an apocalyptic number.

It is an amenable number.

12603430901 is a deficient number, since it is larger than the sum of its proper divisors (226711).

12603430901 is an equidigital number, since it uses as much as digits as its factorization.

12603430901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226710.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 12603430901 in words is "twelve billion, six hundred three million, four hundred thirty thousand, nine hundred one".