15872871585873 has 4 divisors (see below), whose sum is σ = 21163828781168. Its totient is φ = 10581914390580.

The previous prime is 15872871585859. The next prime is 15872871585917. The reversal of 15872871585873 is 37858517827851.

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 not a de Polignac number, because 15872871585873 - 2⁵ = 15872871585841 is a prime.

It is a super-2 number, since 2×15872871585873² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15872871585795 and 15872871585804.

It is not an unprimeable number, because it can be changed into a prime (15872871580873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2645478597643 + ... + 2645478597648.

It is an arithmetic number, because the mean of its divisors is an integer number (5290957195292).

Almost surely, 2^{15872871585873} is an apocalyptic number.

It is an amenable number.

15872871585873 is a deficient number, since it is larger than the sum of its proper divisors (5290957195295).

15872871585873 is an equidigital number, since it uses as much as digits as its factorization.

15872871585873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5290957195294.

The product of its digits is 1053696000, while the sum is 75.

The spelling of 15872871585873 in words is "fifteen trillion, eight hundred seventy-two billion, eight hundred seventy-one million, five hundred eighty-five thousand, eight hundred seventy-three".