20164654769 has 8 divisors (see below), whose sum is σ = 23145956160. Its totient is φ = 17208512496.

The previous prime is 20164654739. The next prime is 20164654793. The reversal of 20164654769 is 96745646102.

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

It is not a de Polignac number, because 20164654769 - 2¹² = 20164650673 is a prime.

It is a super-2 number, since 2×20164654769² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20164654739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6288059 + ... + 6291264.

It is an arithmetic number, because the mean of its divisors is an integer number (2893244520).

Almost surely, 2^20164654769 is an apocalyptic number.

It is an amenable number.

20164654769 is a deficient number, since it is larger than the sum of its proper divisors (2981301391).

20164654769 is a wasteful number, since it uses less digits than its factorization.

20164654769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12579559.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 20164654769 in words is "twenty billion, one hundred sixty-four million, six hundred fifty-four thousand, seven hundred sixty-nine".