320435760222440 has 64 divisors (see below), whose sum is σ = 726398322249600. Its totient is φ = 127213458012928.

The previous prime is 320435760222437. The next prime is 320435760222541. The reversal of 320435760222440 is 44222067534023.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 320435760222391 and 320435760222400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31993499 + ... + 40797738.

It is an arithmetic number, because the mean of its divisors is an integer number (11349973785150).

Almost surely, 2^{320435760222440} is an apocalyptic number.

It is an amenable number.

320435760222440 is an abundant number, since it is smaller than the sum of its proper divisors (405962562027160).

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

320435760222440 is a wasteful number, since it uses less digits than its factorization.

320435760222440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72792074 (or 72792070 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 44.

The spelling of 320435760222440 in words is "three hundred twenty trillion, four hundred thirty-five billion, seven hundred sixty million, two hundred twenty-two thousand, four hundred forty".