13127621173 has 2 divisors, whose sum is σ = 13127621174. Its totient is φ = 13127621172.

The previous prime is 13127621161. The next prime is 13127621179. The reversal of 13127621173 is 37112672131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12727901124 + 399720049 = 112818^2 + 19993^2 .

It is a cyclic number.

It is not a de Polignac number, because 13127621173 - 2²¹ = 13125524021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13127621179) 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 as a sum of consecutive naturals, namely, 6563810586 + 6563810587.

It is an arithmetic number, because the mean of its divisors is an integer number (6563810587).

Almost surely, 2^13127621173 is an apocalyptic number.

It is an amenable number.

13127621173 is a deficient number, since it is larger than the sum of its proper divisors (1).

13127621173 is an equidigital number, since it uses as much as digits as its factorization.

13127621173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 34.

The spelling of 13127621173 in words is "thirteen billion, one hundred twenty-seven million, six hundred twenty-one thousand, one hundred seventy-three".