20120417406165 has 16 divisors (see below), whose sum is σ = 32477558718528. Its totient is φ = 10635925660416.

The previous prime is 20120417406161. The next prime is 20120417406181. The reversal of 20120417406165 is 56160471402102.

It is not a de Polignac number, because 20120417406165 - 2² = 20120417406161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120417406161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5935224679 + ... + 5935228068.

It is an arithmetic number, because the mean of its divisors is an integer number (2029847419908).

Almost surely, 2^{20120417406165} is an apocalyptic number.

It is an amenable number.

20120417406165 is a deficient number, since it is larger than the sum of its proper divisors (12357141312363).

20120417406165 is a wasteful number, since it uses less digits than its factorization.

20120417406165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11870452868.

The product of its (nonzero) digits is 80640, while the sum is 39.

Adding to 20120417406165 its reverse (56160471402102), we get a palindrome (76280888808267).

The spelling of 20120417406165 in words is "twenty trillion, one hundred twenty billion, four hundred seventeen million, four hundred six thousand, one hundred sixty-five".