318423908640 has 48 divisors (see below), whose sum is σ = 1003035313728. Its totient is φ = 84913042176.

The previous prime is 318423908633. The next prime is 318423908701. The reversal of 318423908640 is 46809324813.

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

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 318423908640.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 331691092 + ... + 331692051.

It is an arithmetic number, because the mean of its divisors is an integer number (20896569036).

Almost surely, 2^318423908640 is an apocalyptic number.

318423908640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

318423908640 is an abundant number, since it is smaller than the sum of its proper divisors (684611405088).

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

318423908640 is a wasteful number, since it uses less digits than its factorization.

318423908640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663383161 (or 663383153 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 318423908640 in words is "three hundred eighteen billion, four hundred twenty-three million, nine hundred eight thousand, six hundred forty".