16631850686 has 64 divisors (see below), whose sum is σ = 29750618304. Its totient is φ = 6886656000.

The previous prime is 16631850671. The next prime is 16631850709. The reversal of 16631850686 is 68605813661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2723036 + ... + 2729136.

It is an arithmetic number, because the mean of its divisors is an integer number (464853411).

Almost surely, 2^16631850686 is an apocalyptic number.

16631850686 is a deficient number, since it is larger than the sum of its proper divisors (13118767618).

16631850686 is a wasteful number, since it uses less digits than its factorization.

16631850686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6365.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 16631850686 in words is "sixteen billion, six hundred thirty-one million, eight hundred fifty thousand, six hundred eighty-six".