20165168769 has 8 divisors (see below), whose sum is σ = 26898025440. Its totient is φ = 13437878976.

The previous prime is 20165168729. The next prime is 20165168789. The reversal of 20165168769 is 96786156102.

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

It is not a de Polignac number, because 20165168769 - 2¹⁵ = 20165136001 is a prime.

It is a super-2 number, since 2×20165168769² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20165168729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1383259 + ... + 1397760.

It is an arithmetic number, because the mean of its divisors is an integer number (3362253180).

Almost surely, 2^20165168769 is an apocalyptic number.

It is an amenable number.

20165168769 is a deficient number, since it is larger than the sum of its proper divisors (6732856671).

20165168769 is a wasteful number, since it uses less digits than its factorization.

20165168769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783439.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 20165168769 in words is "twenty billion, one hundred sixty-five million, one hundred sixty-eight thousand, seven hundred sixty-nine".