20413515161165 has 8 divisors (see below), whose sum is σ = 27995677935360. Its totient is φ = 13997838967632.

The previous prime is 20413515161161. The next prime is 20413515161183. The reversal of 20413515161165 is 56116151531402.

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

It is a cyclic number.

It is not a de Polignac number, because 20413515161165 - 2² = 20413515161161 is a prime.

It is a super-2 number, since 2×20413515161165² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413515161161) 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, 291621645125 + ... + 291621645194.

It is an arithmetic number, because the mean of its divisors is an integer number (3499459741920).

Almost surely, 2^{20413515161165} is an apocalyptic number.

It is an amenable number.

20413515161165 is a deficient number, since it is larger than the sum of its proper divisors (7582162774195).

20413515161165 is an equidigital number, since it uses as much as digits as its factorization.

20413515161165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583243290331.

The product of its (nonzero) digits is 108000, while the sum is 41.

Adding to 20413515161165 its reverse (56116151531402), we get a palindrome (76529666692567).

The spelling of 20413515161165 in words is "twenty trillion, four hundred thirteen billion, five hundred fifteen million, one hundred sixty-one thousand, one hundred sixty-five".