16531546466 has 8 divisors (see below), whose sum is σ = 24819927660. Its totient is φ = 8258237248.

The previous prime is 16531546397. The next prime is 16531546481. The reversal of 16531546466 is 66464513561.

It can be written as a sum of positive squares in 2 ways, for example, as 16454475625 + 77070841 = 128275^2 + 8779^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 16531546466.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3765251 + ... + 3769638.

Almost surely, 2^16531546466 is an apocalyptic number.

16531546466 is a deficient number, since it is larger than the sum of its proper divisors (8288381194).

16531546466 is a wasteful number, since it uses less digits than its factorization.

16531546466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7535988.

The product of its digits is 1555200, while the sum is 47.

The spelling of 16531546466 in words is "sixteen billion, five hundred thirty-one million, five hundred forty-six thousand, four hundred sixty-six".