12638799083 has 4 divisors (see below), whose sum is σ = 12694476840. Its totient is φ = 12583121328.

The previous prime is 12638799029. The next prime is 12638799091. The reversal of 12638799083 is 38099783621.

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

It is a cyclic number.

It is not a de Polignac number, because 12638799083 - 2²⁰ = 12637750507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12638799883) 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, 27838538 + ... + 27838991.

It is an arithmetic number, because the mean of its divisors is an integer number (3173619210).

Almost surely, 2^12638799083 is an apocalyptic number.

12638799083 is a deficient number, since it is larger than the sum of its proper divisors (55677757).

12638799083 is an equidigital number, since it uses as much as digits as its factorization.

12638799083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55677756.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 12638799083 in words is "twelve billion, six hundred thirty-eight million, seven hundred ninety-nine thousand, eighty-three".