871563940007 has 4 divisors (see below), whose sum is σ = 872025330960. Its totient is φ = 871102549056.

The previous prime is 871563939989. The next prime is 871563940019. The reversal of 871563940007 is 700049365178.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 871563940007 - 2¹⁴ = 871563923623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871563940607) 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 3 ways as a sum of consecutive naturals, for example, 230692643 + ... + 230696420.

It is an arithmetic number, because the mean of its divisors is an integer number (218006332740).

Almost surely, 2^871563940007 is an apocalyptic number.

871563940007 is a deficient number, since it is larger than the sum of its proper divisors (461390953).

871563940007 is a wasteful number, since it uses less digits than its factorization.

871563940007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 461390952.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 871563940007 in words is "eight hundred seventy-one billion, five hundred sixty-three million, nine hundred forty thousand, seven".