320740616406 has 64 divisors (see below), whose sum is σ = 784786636800. Its totient is φ = 85345521696.

The previous prime is 320740616389. The next prime is 320740616419. The reversal of 320740616406 is 604616047023.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3359110 + ... + 3453273.

It is an arithmetic number, because the mean of its divisors is an integer number (12262291200).

Almost surely, 2^320740616406 is an apocalyptic number.

320740616406 is an abundant number, since it is smaller than the sum of its proper divisors (464046020394).

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

320740616406 is a wasteful number, since it uses less digits than its factorization.

320740616406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6812473.

The product of its (nonzero) digits is 145152, while the sum is 39.

The spelling of 320740616406 in words is "three hundred twenty billion, seven hundred forty million, six hundred sixteen thousand, four hundred six".