16639540286 has 16 divisors (see below), whose sum is σ = 25586221248. Its totient is φ = 8111088000.

The previous prime is 16639540273. The next prime is 16639540367. The reversal of 16639540286 is 68204593661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45386 + ... + 187986.

It is an arithmetic number, because the mean of its divisors is an integer number (1599138828).

Almost surely, 2^16639540286 is an apocalyptic number.

16639540286 is a deficient number, since it is larger than the sum of its proper divisors (8946680962).

16639540286 is a wasteful number, since it uses less digits than its factorization.

16639540286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144067.

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 16639540286 in words is "sixteen billion, six hundred thirty-nine million, five hundred forty thousand, two hundred eighty-six".