16432461544321 has 8 divisors (see below), whose sum is σ = 16441635135744. Its totient is φ = 16423288374240.

The previous prime is 16432461544277. The next prime is 16432461544327. The reversal of 16432461544321 is 12344516423461.

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 not a de Polignac number, because 16432461544321 - 2¹³ = 16432461536129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16432461544327) 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, 109178100 + ... + 109328506.

It is an arithmetic number, because the mean of its divisors is an integer number (2055204391968).

Almost surely, 2^{16432461544321} is an apocalyptic number.

It is an amenable number.

16432461544321 is a deficient number, since it is larger than the sum of its proper divisors (9173591423).

16432461544321 is a wasteful number, since it uses less digits than its factorization.

16432461544321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210671.

The product of its digits is 1658880, while the sum is 46.

Adding to 16432461544321 its reverse (12344516423461), we get a palindrome (28776977967782).

The spelling of 16432461544321 in words is "sixteen trillion, four hundred thirty-two billion, four hundred sixty-one million, five hundred forty-four thousand, three hundred twenty-one".