12639214193 has 4 divisors (see below), whose sum is σ = 12719718900. Its totient is φ = 12558709488.

The previous prime is 12639214177. The next prime is 12639214201. The reversal of 12639214193 is 39141293621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39141293621 = 181 ⋅216250241.

It can be written as a sum of positive squares in 2 ways, for example, as 6135275584 + 6503938609 = 78328^2 + 80647^2 .

It is a cyclic number.

It is not a de Polignac number, because 12639214193 - 2⁴ = 12639214177 is a prime.

It is a super-3 number, since 3×12639214193³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12639214193.

It is not an unprimeable number, because it can be changed into a prime (12639214123) 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, 40252118 + ... + 40252431.

It is an arithmetic number, because the mean of its divisors is an integer number (3179929725).

Almost surely, 2^12639214193 is an apocalyptic number.

It is an amenable number.

12639214193 is a deficient number, since it is larger than the sum of its proper divisors (80504707).

12639214193 is an equidigital number, since it uses as much as digits as its factorization.

12639214193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80504706.

The product of its digits is 69984, while the sum is 41.

The spelling of 12639214193 in words is "twelve billion, six hundred thirty-nine million, two hundred fourteen thousand, one hundred ninety-three".