13667634161 has 8 divisors (see below), whose sum is σ = 13776825384. Its totient is φ = 13558579840.

The previous prime is 13667634139. The next prime is 13667634179. The reversal of 13667634161 is 16143676631.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2525565025 + 11142069136 = 50255^2 + 105556^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13667634161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13667634121) 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, 171131 + ... + 237951.

It is an arithmetic number, because the mean of its divisors is an integer number (1722103173).

Almost surely, 2^13667634161 is an apocalyptic number.

It is an amenable number.

13667634161 is a deficient number, since it is larger than the sum of its proper divisors (109191223).

13667634161 is a wasteful number, since it uses less digits than its factorization.

13667634161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68451.

The product of its digits is 326592, while the sum is 44.

The spelling of 13667634161 in words is "thirteen billion, six hundred sixty-seven million, six hundred thirty-four thousand, one hundred sixty-one".