16820658633 has 16 divisors (see below), whose sum is σ = 22541682240. Its totient is φ = 11156838336.

The previous prime is 16820658629. The next prime is 16820658641. The reversal of 16820658633 is 33685602861.

It is not a de Polignac number, because 16820658633 - 2² = 16820658629 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16820658643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496603 + ... + 529391.

It is an arithmetic number, because the mean of its divisors is an integer number (1408855140).

Almost surely, 2^16820658633 is an apocalyptic number.

It is an amenable number.

16820658633 is a deficient number, since it is larger than the sum of its proper divisors (5721023607).

16820658633 is a wasteful number, since it uses less digits than its factorization.

16820658633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33656.

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 16820658633 in words is "sixteen billion, eight hundred twenty million, six hundred fifty-eight thousand, six hundred thirty-three".