864215512468 has 72 divisors (see below), whose sum is σ = 1990024593984. Its totient is φ = 318985862400.

The previous prime is 864215512429. The next prime is 864215512469.

864215512468 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864215512469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3775093 + ... + 3997468.

It is an arithmetic number, because the mean of its divisors is an integer number (27639230472).

Almost surely, 2^864215512468 is an apocalyptic number.

It is an amenable number.

864215512468 is an abundant number, since it is smaller than the sum of its proper divisors (1125809081516).

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

864215512468 is a wasteful number, since it uses less digits than its factorization.

864215512468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7772621 (or 7772600 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 52.

The spelling of 864215512468 in words is "eight hundred sixty-four billion, two hundred fifteen million, five hundred twelve thousand, four hundred sixty-eight".