16840637679 has 8 divisors (see below), whose sum is σ = 22498826112. Its totient is φ = 11204770520.

The previous prime is 16840637677. The next prime is 16840637689. The reversal of 16840637679 is 97673604861.

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

It is a cyclic number.

It is not a de Polignac number, because 16840637679 - 2¹ = 16840637677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16840637677) 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, 5578557 + ... + 5581574.

It is an arithmetic number, because the mean of its divisors is an integer number (2812353264).

Almost surely, 2^16840637679 is an apocalyptic number.

16840637679 is a deficient number, since it is larger than the sum of its proper divisors (5658188433).

16840637679 is a wasteful number, since it uses less digits than its factorization.

16840637679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11160637.

The product of its (nonzero) digits is 9144576, while the sum is 57.

The spelling of 16840637679 in words is "sixteen billion, eight hundred forty million, six hundred thirty-seven thousand, six hundred seventy-nine".