16662289443 has 8 divisors (see below), whose sum is σ = 22529293056. Its totient is φ = 10951739400.

The previous prime is 16662289421. The next prime is 16662289481. The reversal of 16662289443 is 34498226661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16662289443 - 2⁵ = 16662289411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16662289843) 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, 39113143 + ... + 39113568.

It is an arithmetic number, because the mean of its divisors is an integer number (2816161632).

Almost surely, 2^16662289443 is an apocalyptic number.

16662289443 is a deficient number, since it is larger than the sum of its proper divisors (5867003613).

16662289443 is an equidigital number, since it uses as much as digits as its factorization.

16662289443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78226785.

The product of its digits is 2985984, while the sum is 51.

The spelling of 16662289443 in words is "sixteen billion, six hundred sixty-two million, two hundred eighty-nine thousand, four hundred forty-three".