878932471805 has 18 divisors (see below), whose sum is σ = 1059959655294. Its totient is φ = 699669398896.

The previous prime is 878932471793. The next prime is 878932471841. The reversal of 878932471805 is 508174239878.

It can be written as a sum of positive squares in only one way, i.e., 703145977444 + 175786494361 = 838538^2 + 419269^2 .

It is not a de Polignac number, because 878932471805 - 2¹⁰ = 878932470781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 475869392 + ... + 475871238.

Almost surely, 2^878932471805 is an apocalyptic number.

It is an amenable number.

878932471805 is a deficient number, since it is larger than the sum of its proper divisors (181027183489).

878932471805 is an frugal number, since it uses more digits than its factorization.

878932471805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4153 (or 2079 counting only the distinct ones).

The product of its (nonzero) digits is 27095040, while the sum is 62.

The spelling of 878932471805 in words is "eight hundred seventy-eight billion, nine hundred thirty-two million, four hundred seventy-one thousand, eight hundred five".