16504644346 has 4 divisors (see below), whose sum is σ = 24756966522. Its totient is φ = 8252322172.

The previous prime is 16504644319. The next prime is 16504644349. The reversal of 16504644346 is 64344640561.

16504644346 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 9762428025 + 6742216321 = 98805^2 + 82111^2 .

It is not an unprimeable number, because it can be changed into a prime (16504644349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4126161085 + ... + 4126161088.

Almost surely, 2^16504644346 is an apocalyptic number.

16504644346 is a deficient number, since it is larger than the sum of its proper divisors (8252322176).

16504644346 is an equidigital number, since it uses as much as digits as its factorization.

16504644346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8252322175.

The product of its (nonzero) digits is 829440, while the sum is 43.

The spelling of 16504644346 in words is "sixteen billion, five hundred four million, six hundred forty-four thousand, three hundred forty-six".