871345608473615 has 24 divisors (see below), whose sum is σ = 1149346406644800. Its totient is φ = 633686958400320.

The previous prime is 871345608473611. The next prime is 871345608473633. The reversal of 871345608473615 is 516374806543178.

It is not a de Polignac number, because 871345608473615 - 2² = 871345608473611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871345608473611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1244840 + ... + 41764109.

It is an arithmetic number, because the mean of its divisors is an integer number (47889433610200).

Almost surely, 2^{871345608473615} is an apocalyptic number.

871345608473615 is a deficient number, since it is larger than the sum of its proper divisors (278000798171185).

871345608473615 is a wasteful number, since it uses less digits than its factorization.

871345608473615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43042463 (or 43042452 counting only the distinct ones).

The product of its (nonzero) digits is 406425600, while the sum is 68.

The spelling of 871345608473615 in words is "eight hundred seventy-one trillion, three hundred forty-five billion, six hundred eight million, four hundred seventy-three thousand, six hundred fifteen".