16644844662 has 16 divisors (see below), whose sum is σ = 33291760320. Its totient is φ = 5547936392.

The previous prime is 16644844627. The next prime is 16644844681. The reversal of 16644844662 is 26644844661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30313 + ... + 184955.

It is an arithmetic number, because the mean of its divisors is an integer number (2080735020).

Almost surely, 2^16644844662 is an apocalyptic number.

16644844662 is an abundant number, since it is smaller than the sum of its proper divisors (16646915658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16644844662 is a wasteful number, since it uses less digits than its factorization.

16644844662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172587.

The product of its digits is 5308416, while the sum is 51.

Subtracting 16644844662 from its reverse (26644844661), we obtain a palindrome (9999999999).

The spelling of 16644844662 in words is "sixteen billion, six hundred forty-four million, eight hundred forty-four thousand, six hundred sixty-two".