15517200711117 has 16 divisors (see below), whose sum is σ = 24127814518400. Its totient is φ = 8866971834336.

The previous prime is 15517200711101. The next prime is 15517200711151. The reversal of 15517200711117 is 71111700271551.

It is not a de Polignac number, because 15517200711117 - 2⁴ = 15517200711101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15517200711317) 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, 7539941008 + ... + 7539943065.

It is an arithmetic number, because the mean of its divisors is an integer number (1507988407400).

Almost surely, 2^{15517200711117} is an apocalyptic number.

It is an amenable number.

15517200711117 is a deficient number, since it is larger than the sum of its proper divisors (8610613807283).

15517200711117 is an equidigital number, since it uses as much as digits as its factorization.

15517200711117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15079884097 (or 15079884083 counting only the distinct ones).

The product of its (nonzero) digits is 17150, while the sum is 39.

Adding to 15517200711117 its reverse (71111700271551), we get a palindrome (86628900982668).

The spelling of 15517200711117 in words is "fifteen trillion, five hundred seventeen billion, two hundred million, seven hundred eleven thousand, one hundred seventeen".