12639627071 has 2 divisors, whose sum is σ = 12639627072. Its totient is φ = 12639627070.

The previous prime is 12639626981. The next prime is 12639627079. The reversal of 12639627071 is 17072693621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12639627071 - 2¹⁰ = 12639626047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12639627079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6319813535 + 6319813536.

It is an arithmetic number, because the mean of its divisors is an integer number (6319813536).

Almost surely, 2^12639627071 is an apocalyptic number.

12639627071 is a deficient number, since it is larger than the sum of its proper divisors (1).

12639627071 is an equidigital number, since it uses as much as digits as its factorization.

12639627071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 44.

The spelling of 12639627071 in words is "twelve billion, six hundred thirty-nine million, six hundred twenty-seven thousand, seventy-one".