16604056111 has 24 divisors (see below), whose sum is σ = 18484517520. Its totient is φ = 14842308096.

The previous prime is 16604056069. The next prime is 16604056171. The reversal of 16604056111 is 11165040661.

It is not a de Polignac number, because 16604056111 - 2⁷ = 16604055983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16604056171) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23418625 + ... + 23419333.

It is an arithmetic number, because the mean of its divisors is an integer number (770188230).

Almost surely, 2^16604056111 is an apocalyptic number.

16604056111 is a deficient number, since it is larger than the sum of its proper divisors (1880461409).

16604056111 is an frugal number, since it uses more digits than its factorization.

16604056111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1531 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

Adding to 16604056111 its reverse (11165040661), we get a palindrome (27769096772).

The spelling of 16604056111 in words is "sixteen billion, six hundred four million, fifty-six thousand, one hundred eleven".