871351502887042 has 16 divisors (see below), whose sum is σ = 1321684591966200. Its totient is φ = 430801191014400.

The previous prime is 871351502886989. The next prime is 871351502887087. The reversal of 871351502887042 is 240788205153178.

It can be written as a sum of positive squares in 4 ways, for example, as 858293173882881 + 13058329004161 = 29296641^2 + 3613631^2 .

It is a super-2 number, since 2×871351502887042² (a number of 31 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2804539917 + ... + 2804850592.

Almost surely, 2^{871351502887042} is an apocalyptic number.

871351502887042 is a deficient number, since it is larger than the sum of its proper divisors (450333089079158).

871351502887042 is a wasteful number, since it uses less digits than its factorization.

871351502887042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609391381.

The product of its (nonzero) digits is 30105600, while the sum is 61.

The spelling of 871351502887042 in words is "eight hundred seventy-one trillion, three hundred fifty-one billion, five hundred two million, eight hundred eighty-seven thousand, forty-two".