16821477383 has 8 divisors (see below), whose sum is σ = 17002379520. Its totient is φ = 16641014200.

The previous prime is 16821477377. The next prime is 16821477391. The reversal of 16821477383 is 38377412861.

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 16821477383 - 2⁶ = 16821477319 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 (16821477313) 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, 32393 + ... + 186258.

It is an arithmetic number, because the mean of its divisors is an integer number (2125297440).

Almost surely, 2^16821477383 is an apocalyptic number.

16821477383 is a deficient number, since it is larger than the sum of its proper divisors (180902137).

16821477383 is a wasteful number, since it uses less digits than its factorization.

16821477383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219477.

The product of its digits is 1354752, while the sum is 50.

The spelling of 16821477383 in words is "sixteen billion, eight hundred twenty-one million, four hundred seventy-seven thousand, three hundred eighty-three".