13670878171 has 2 divisors, whose sum is σ = 13670878172. Its totient is φ = 13670878170.

The previous prime is 13670878163. The next prime is 13670878183. The reversal of 13670878171 is 17187807631.

It is a weak prime.

It is an emirp because it is prime and its reverse (17187807631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13670878171 - 2³ = 13670878163 is a prime.

It is not a weakly prime, because it can be changed into another prime (13670878121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6835439085 + 6835439086.

It is an arithmetic number, because the mean of its divisors is an integer number (6835439086).

Almost surely, 2^13670878171 is an apocalyptic number.

13670878171 is a deficient number, since it is larger than the sum of its proper divisors (1).

13670878171 is an equidigital number, since it uses as much as digits as its factorization.

13670878171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 395136, while the sum is 49.

The spelling of 13670878171 in words is "thirteen billion, six hundred seventy million, eight hundred seventy-eight thousand, one hundred seventy-one".