877284961173 has 20 divisors (see below), whose sum is σ = 1310995479948. Its totient is φ = 584640918720.

The previous prime is 877284961139. The next prime is 877284961199. The reversal of 877284961173 is 371169482778.

877284961173 is a `hidden beast` number, since 8 + 7 + 7 + 2 + 8 + 4 + 9 + 611 + 7 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 858378161169 + 18906800004 = 926487^2 + 137502^2 .

It is not a de Polignac number, because 877284961173 - 2¹² = 877284957077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 877284961173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (877284961573) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1776318 + ... + 2215823.

Almost surely, 2^877284961173 is an apocalyptic number.

It is an amenable number.

877284961173 is a deficient number, since it is larger than the sum of its proper divisors (433710518775).

877284961173 is a wasteful number, since it uses less digits than its factorization.

877284961173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994866 (or 3994857 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The spelling of 877284961173 in words is "eight hundred seventy-seven billion, two hundred eighty-four million, nine hundred sixty-one thousand, one hundred seventy-three".