871185515250 has 64 divisors (see below), whose sum is σ = 2202004247040. Its totient is φ = 229375411200.

The previous prime is 871185515219. The next prime is 871185515251. The reversal of 871185515250 is 52515581178.

It is a self number, because there is not a number n which added to its sum of digits gives 871185515250.

It is not an unprimeable number, because it can be changed into a prime (871185515251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7292527 + ... + 7411026.

It is an arithmetic number, because the mean of its divisors is an integer number (34406316360).

Almost surely, 2^871185515250 is an apocalyptic number.

871185515250 is an abundant number, since it is smaller than the sum of its proper divisors (1330818731790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

871185515250 is a wasteful number, since it uses less digits than its factorization.

871185515250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14703652 (or 14703642 counting only the distinct ones).

The product of its (nonzero) digits is 560000, while the sum is 48.

The spelling of 871185515250 in words is "eight hundred seventy-one billion, one hundred eighty-five million, five hundred fifteen thousand, two hundred fifty".