16669908544 has 21 divisors (see below), whose sum is σ = 33081399547. Its totient is φ = 8334437824.

The previous prime is 16669908539. The next prime is 16669908547. The reversal of 16669908544 is 44580996661.

It is a happy number.

The square root of 16669908544 is 129112.

It is a perfect power (a square), and thus also a powerful number.

It is a super-4 number, since 4×16669908544⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16669908547) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1024827 + ... + 1040965.

Almost surely, 2^16669908544 is an apocalyptic number.

16669908544 is the 129112-nd square number.

It is an amenable number.

16669908544 is a deficient number, since it is larger than the sum of its proper divisors (16411491003).

16669908544 is an frugal number, since it uses more digits than its factorization.

16669908544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32290 (or 16141 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 58.

The spelling of 16669908544 in words is "sixteen billion, six hundred sixty-nine million, nine hundred eight thousand, five hundred forty-four".