16217668141 has 6 divisors (see below), whose sum is σ = 16240902990. Its totient is φ = 16194442968.

The previous prime is 16217668009. The next prime is 16217668151. The reversal of 16217668141 is 14186671261.

It can be written as a sum of positive squares in only one way, i.e., 14261375241 + 1956292900 = 119421^2 + 44230^2 .

It is not a de Polignac number, because 16217668141 - 2²⁵ = 16184113709 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 (16217668151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3664456 + ... + 3668878.

It is an arithmetic number, because the mean of its divisors is an integer number (2706817165).

Almost surely, 2^16217668141 is an apocalyptic number.

It is an amenable number.

16217668141 is a deficient number, since it is larger than the sum of its proper divisors (23234849).

16217668141 is an frugal number, since it uses more digits than its factorization.

16217668141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9675 (or 5252 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The spelling of 16217668141 in words is "sixteen billion, two hundred seventeen million, six hundred sixty-eight thousand, one hundred forty-one".