16432451413405 has 4 divisors (see below), whose sum is σ = 19718941696092. Its totient is φ = 13145961130720.

The previous prime is 16432451413403. The next prime is 16432451413487. The reversal of 16432451413405 is 50431415423461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6909438073561 + 9523013339844 = 2628581^2 + 3085938^2 .

It is not a de Polignac number, because 16432451413405 - 2¹ = 16432451413403 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 (16432451413403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1643245141336 + ... + 1643245141345.

It is an arithmetic number, because the mean of its divisors is an integer number (4929735424023).

Almost surely, 2^{16432451413405} is an apocalyptic number.

It is an amenable number.

16432451413405 is a deficient number, since it is larger than the sum of its proper divisors (3286490282687).

16432451413405 is an equidigital number, since it uses as much as digits as its factorization.

16432451413405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286490282686.

The product of its (nonzero) digits is 691200, while the sum is 43.

Adding to 16432451413405 its reverse (50431415423461), we get a palindrome (66863866836866).

The spelling of 16432451413405 in words is "sixteen trillion, four hundred thirty-two billion, four hundred fifty-one million, four hundred thirteen thousand, four hundred five".