20169491716 has 24 divisors (see below), whose sum is σ = 38524653216. Its totient is φ = 9163365120.

The previous prime is 20169491651. The next prime is 20169491753. The reversal of 20169491716 is 61719496102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24886 + ... + 202381.

It is an arithmetic number, because the mean of its divisors is an integer number (1605193884).

Almost surely, 2^20169491716 is an apocalyptic number.

It is an amenable number.

20169491716 is a deficient number, since it is larger than the sum of its proper divisors (18355161500).

20169491716 is a wasteful number, since it uses less digits than its factorization.

20169491716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229299 (or 229297 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 20169491716 in words is "twenty billion, one hundred sixty-nine million, four hundred ninety-one thousand, seven hundred sixteen".