16466678485 has 8 divisors (see below), whose sum is σ = 19760922936. Its totient is φ = 13172736960.

The previous prime is 16466678483. The next prime is 16466678509. The reversal of 16466678485 is 58487666461.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2628920529 + 13837757956 = 51273^2 + 117634^2 .

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

It is not a de Polignac number, because 16466678485 - 2¹ = 16466678483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16466678483) 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, 69015 + ... + 194155.

It is an arithmetic number, because the mean of its divisors is an integer number (2470115367).

Almost surely, 2^16466678485 is an apocalyptic number.

It is an amenable number.

16466678485 is a deficient number, since it is larger than the sum of its proper divisors (3294244451).

16466678485 is a wasteful number, since it uses less digits than its factorization.

16466678485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151463.

The product of its digits is 46448640, while the sum is 61.

The spelling of 16466678485 in words is "sixteen billion, four hundred sixty-six million, six hundred seventy-eight thousand, four hundred eighty-five".