864535478416 has 15 divisors (see below), whose sum is σ = 1675044695443. Its totient is φ = 432265879600.

The previous prime is 864535478413. The next prime is 864535478441. The reversal of 864535478416 is 614874535468.

The square root of 864535478416 is 929804.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (864535478413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3602991 + ... + 3835441.

Almost surely, 2^864535478416 is an apocalyptic number.

864535478416 is the 929804-th square number.

It is an amenable number.

864535478416 is a deficient number, since it is larger than the sum of its proper divisors (810509217027).

864535478416 is an frugal number, since it uses more digits than its factorization.

864535478416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464910 (or 232453 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 61.

The spelling of 864535478416 in words is "eight hundred sixty-four billion, five hundred thirty-five million, four hundred seventy-eight thousand, four hundred sixteen".