16421354117 has 16 divisors (see below), whose sum is σ = 18815923200. Its totient is φ = 14039004672.

The previous prime is 16421354099. The next prime is 16421354129. The reversal of 16421354117 is 71145312461.

It is not a de Polignac number, because 16421354117 - 2¹⁰ = 16421353093 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 (16421354177) 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 15 ways as a sum of consecutive naturals, for example, 6843884 + ... + 6846282.

It is an arithmetic number, because the mean of its divisors is an integer number (1175995200).

Almost surely, 2^16421354117 is an apocalyptic number.

It is an amenable number.

16421354117 is a deficient number, since it is larger than the sum of its proper divisors (2394569083).

16421354117 is a wasteful number, since it uses less digits than its factorization.

16421354117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4532.

The product of its digits is 20160, while the sum is 35.

Adding to 16421354117 its reverse (71145312461), we get a palindrome (87566666578).

The spelling of 16421354117 in words is "sixteen billion, four hundred twenty-one million, three hundred fifty-four thousand, one hundred seventeen".