864806200240 has 40 divisors (see below), whose sum is σ = 2053454731200. Its totient is φ = 338562425856.

The previous prime is 864806200217. The next prime is 864806200241. The reversal of 864806200240 is 42002608468.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 864806200193 and 864806200202.

It is not an unprimeable number, because it can be changed into a prime (864806200241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114997065 + ... + 115004584.

It is an arithmetic number, because the mean of its divisors is an integer number (51336368280).

Almost surely, 2^864806200240 is an apocalyptic number.

864806200240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

864806200240 is an abundant number, since it is smaller than the sum of its proper divisors (1188648530960).

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

864806200240 is a wasteful number, since it uses less digits than its factorization.

864806200240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230001709 (or 230001703 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 864806200240 in words is "eight hundred sixty-four billion, eight hundred six million, two hundred thousand, two hundred forty".