16663259473 has 8 divisors (see below), whose sum is σ = 19044829440. Its totient is φ = 14281965600.

The previous prime is 16663259441. The next prime is 16663259477. The reversal of 16663259473 is 37495236661.

It is a happy number.

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

It is not a de Polignac number, because 16663259473 - 2⁵ = 16663259441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16663259473.

It is not an unprimeable number, because it can be changed into a prime (16663259477) 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, 82488 + ... + 200326.

It is an arithmetic number, because the mean of its divisors is an integer number (2380603680).

Almost surely, 2^16663259473 is an apocalyptic number.

It is an amenable number.

16663259473 is a deficient number, since it is larger than the sum of its proper divisors (2381569967).

16663259473 is a wasteful number, since it uses less digits than its factorization.

16663259473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138047.

The product of its digits is 4898880, while the sum is 52.

The spelling of 16663259473 in words is "sixteen billion, six hundred sixty-three million, two hundred fifty-nine thousand, four hundred seventy-three".