15217104861313 has 4 divisors (see below), whose sum is σ = 15234819768880. Its totient is φ = 15199389953748.

The previous prime is 15217104861229. The next prime is 15217104861379. The reversal of 15217104861313 is 31316840171251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15217104861313 - 2¹³ = 15217104853121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15217104861313.

It is not an unprimeable number, because it can be changed into a prime (15217104861713) 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 3 ways as a sum of consecutive naturals, for example, 8857452495 + ... + 8857454212.

It is an arithmetic number, because the mean of its divisors is an integer number (3808704942220).

Almost surely, 2^{15217104861313} is an apocalyptic number.

It is an amenable number.

15217104861313 is a deficient number, since it is larger than the sum of its proper divisors (17714907567).

15217104861313 is an equidigital number, since it uses as much as digits as its factorization.

15217104861313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17714907566.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 15217104861313 in words is "fifteen trillion, two hundred seventeen billion, one hundred four million, eight hundred sixty-one thousand, three hundred thirteen".