9515165087873 has 4 divisors (see below), whose sum is σ = 9515173011780. Its totient is φ = 9515157163968.

The previous prime is 9515165087867. The next prime is 9515165087951. The reversal of 9515165087873 is 3787805615159.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6480573215809 + 3034591872064 = 2545697^2 + 1742008^2 .

It is a cyclic number.

It is not a de Polignac number, because 9515165087873 - 2¹² = 9515165083777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9515165087573) 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, 1748540 + ... + 4699757.

It is an arithmetic number, because the mean of its divisors is an integer number (2378793252945).

Almost surely, 2^{9515165087873} is an apocalyptic number.

It is an amenable number.

9515165087873 is a deficient number, since it is larger than the sum of its proper divisors (7923907).

9515165087873 is a wasteful number, since it uses less digits than its factorization.

9515165087873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7923906.

The product of its (nonzero) digits is 63504000, while the sum is 65.

The spelling of 9515165087873 in words is "nine trillion, five hundred fifteen billion, one hundred sixty-five million, eighty-seven thousand, eight hundred seventy-three".