16634939171 has 8 divisors (see below), whose sum is σ = 17306763264. Its totient is φ = 15971565960.

The previous prime is 16634939149. The next prime is 16634939183. The reversal of 16634939171 is 17193943661.

It is a happy number.

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-16634939171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16634938171) 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, 2108705 + ... + 2116578.

It is an arithmetic number, because the mean of its divisors is an integer number (2163345408).

Almost surely, 2^16634939171 is an apocalyptic number.

16634939171 is a deficient number, since it is larger than the sum of its proper divisors (671824093).

16634939171 is a wasteful number, since it uses less digits than its factorization.

16634939171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4225441.

The product of its digits is 734832, while the sum is 50.

The spelling of 16634939171 in words is "sixteen billion, six hundred thirty-four million, nine hundred thirty-nine thousand, one hundred seventy-one".