12638619043 has 8 divisors (see below), whose sum is σ = 13397661360. Its totient is φ = 11881309440.

The previous prime is 12638619029. The next prime is 12638619047. The reversal of 12638619043 is 34091683621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12638619043 - 2²⁵ = 12605064611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12638619047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418138 + ... + 447343.

It is an arithmetic number, because the mean of its divisors is an integer number (1674707670).

Almost surely, 2^12638619043 is an apocalyptic number.

12638619043 is a deficient number, since it is larger than the sum of its proper divisors (759042317).

12638619043 is an equidigital number, since it uses as much as digits as its factorization.

12638619043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866357.

The product of its (nonzero) digits is 186624, while the sum is 43.

The spelling of 12638619043 in words is "twelve billion, six hundred thirty-eight million, six hundred nineteen thousand, forty-three".