867869516028 has 12 divisors (see below), whose sum is σ = 2025028870760. Its totient is φ = 289289838672.

The previous prime is 867869516027. The next prime is 867869516039. The reversal of 867869516028 is 820615968768.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 867869516028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867869516021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36161229823 + ... + 36161229846.

Almost surely, 2^867869516028 is an apocalyptic number.

It is an amenable number.

867869516028 is an abundant number, since it is smaller than the sum of its proper divisors (1157159354732).

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

867869516028 is a wasteful number, since it uses less digits than its factorization.

867869516028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72322459676 (or 72322459674 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 66.

The spelling of 867869516028 in words is "eight hundred sixty-seven billion, eight hundred sixty-nine million, five hundred sixteen thousand, twenty-eight".