871404066478 has 16 divisors (see below), whose sum is σ = 1509812393904. Its totient is φ = 372793183360.

The previous prime is 871404066439. The next prime is 871404066487. The reversal of 871404066478 is 874660404178.

It is a congruent number.

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, 1164978325 + ... + 1164979072.

It is an arithmetic number, because the mean of its divisors is an integer number (94363274619).

Almost surely, 2^871404066478 is an apocalyptic number.

871404066478 is a deficient number, since it is larger than the sum of its proper divisors (638408327426).

871404066478 is a wasteful number, since it uses less digits than its factorization.

871404066478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329957427.

The product of its (nonzero) digits is 7225344, while the sum is 55.

The spelling of 871404066478 in words is "eight hundred seventy-one billion, four hundred four million, sixty-six thousand, four hundred seventy-eight".