871370798409 has 12 divisors (see below), whose sum is σ = 1258672845300. Its totient is φ = 580901802624.

The previous prime is 871370798381. The next prime is 871370798489. The reversal of 871370798409 is 904897073178.

871370798409 is a `hidden beast` number, since 8 + 7 + 137 + 0 + 7 + 98 + 409 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 393219293184 + 478151505225 = 627072^2 + 691485^2 .

It is not a de Polignac number, because 871370798409 - 2¹² = 871370794313 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (871370798489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 536244 + ... + 1424885.

It is an arithmetic number, because the mean of its divisors is an integer number (104889403775).

Almost surely, 2^871370798409 is an apocalyptic number.

It is an amenable number.

871370798409 is a deficient number, since it is larger than the sum of its proper divisors (387302046891).

871370798409 is a wasteful number, since it uses less digits than its factorization.

871370798409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010504 (or 2010501 counting only the distinct ones).

The product of its (nonzero) digits is 21337344, while the sum is 63.

The spelling of 871370798409 in words is "eight hundred seventy-one billion, three hundred seventy million, seven hundred ninety-eight thousand, four hundred nine".