16840053687 has 4 divisors (see below), whose sum is σ = 22453404920. Its totient is φ = 11226702456.

The previous prime is 16840053683. The next prime is 16840053787. The reversal of 16840053687 is 78635004861.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 16840053687 - 2² = 16840053683 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 (16840053683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2806675612 + ... + 2806675617.

It is an arithmetic number, because the mean of its divisors is an integer number (5613351230).

Almost surely, 2^16840053687 is an apocalyptic number.

16840053687 is a deficient number, since it is larger than the sum of its proper divisors (5613351233).

16840053687 is an equidigital number, since it uses as much as digits as its factorization.

16840053687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5613351232.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 16840053687 in words is "sixteen billion, eight hundred forty million, fifty-three thousand, six hundred eighty-seven".