16117633871 has 4 divisors (see below), whose sum is σ = 16117933752. Its totient is φ = 16117333992.

The previous prime is 16117633849. The next prime is 16117633897. The reversal of 16117633871 is 17833671161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17833671161 = 23 ⋅775377007.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16117633871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16117633171) 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 in 3 ways as a sum of consecutive naturals, for example, 44696 + ... + 185021.

It is an arithmetic number, because the mean of its divisors is an integer number (4029483438).

Almost surely, 2^16117633871 is an apocalyptic number.

16117633871 is a deficient number, since it is larger than the sum of its proper divisors (299881).

16117633871 is an equidigital number, since it uses as much as digits as its factorization.

16117633871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299880.

The product of its digits is 127008, while the sum is 44.

The spelling of 16117633871 in words is "sixteen billion, one hundred seventeen million, six hundred thirty-three thousand, eight hundred seventy-one".