12630355999 has 4 divisors (see below), whose sum is σ = 13179501936. Its totient is φ = 12081210064.

The previous prime is 12630355979. The next prime is 12630356021. The reversal of 12630355999 is 99955303621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99955303621 = 8999 ⋅11107379.

It is a cyclic number.

It is not a de Polignac number, because 12630355999 - 2⁵ = 12630355967 is a prime.

It is a super-2 number, since 2×12630355999² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12630355949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274572934 + ... + 274572979.

It is an arithmetic number, because the mean of its divisors is an integer number (3294875484).

Almost surely, 2^12630355999 is an apocalyptic number.

12630355999 is a deficient number, since it is larger than the sum of its proper divisors (549145937).

12630355999 is an equidigital number, since it uses as much as digits as its factorization.

12630355999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549145936.

The product of its (nonzero) digits is 1968300, while the sum is 52.

The spelling of 12630355999 in words is "twelve billion, six hundred thirty million, three hundred fifty-five thousand, nine hundred ninety-nine".