871087922709 has 4 divisors (see below), whose sum is σ = 1161450563616. Its totient is φ = 580725281804.

The previous prime is 871087922659. The next prime is 871087922773. The reversal of 871087922709 is 907229780178.

It is a happy number.

871087922709 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 871087922709 - 2⁷ = 871087922581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (871087922609) 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, 145181320449 + ... + 145181320454.

It is an arithmetic number, because the mean of its divisors is an integer number (290362640904).

Almost surely, 2^871087922709 is an apocalyptic number.

It is an amenable number.

871087922709 is a deficient number, since it is larger than the sum of its proper divisors (290362640907).

871087922709 is a wasteful number, since it uses less digits than its factorization.

871087922709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290362640906.

The product of its (nonzero) digits is 7112448, while the sum is 60.

The spelling of 871087922709 in words is "eight hundred seventy-one billion, eighty-seven million, nine hundred twenty-two thousand, seven hundred nine".