863874870912 has 48 divisors (see below), whose sum is σ = 2485889931330. Its totient is φ = 287958289920.

The previous prime is 863874870877. The next prime is 863874870917. The reversal of 863874870912 is 219078478368.

863874870912 is a `hidden beast` number, since 8 + 63 + 8 + 7 + 487 + 0 + 91 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 721371640896 + 142503230016 = 849336^2 + 377496^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 863874870912.

It is not an unprimeable number, because it can be changed into a prime (863874870917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 374944539 + ... + 374946842.

Almost surely, 2^863874870912 is an apocalyptic number.

It is an amenable number.

863874870912 is an abundant number, since it is smaller than the sum of its proper divisors (1622015060418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

863874870912 is a wasteful number, since it uses less digits than its factorization.

863874870912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749891401 (or 749891386 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 63.

The spelling of 863874870912 in words is "eight hundred sixty-three billion, eight hundred seventy-four million, eight hundred seventy thousand, nine hundred twelve".