320115342540 has 96 divisors (see below), whose sum is σ = 1024913917440. Its totient is φ = 73130305536.

The previous prime is 320115342529. The next prime is 320115342553. The reversal of 320115342540 is 45243511023.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 320115342498 and 320115342507.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 591639 + ... + 995121.

It is an arithmetic number, because the mean of its divisors is an integer number (10676186640).

Almost surely, 2^320115342540 is an apocalyptic number.

320115342540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320115342540 is an abundant number, since it is smaller than the sum of its proper divisors (704798574900).

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

320115342540 is a wasteful number, since it uses less digits than its factorization.

320115342540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405391 (or 405389 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 320115342540 its reverse (45243511023), we get a palindrome (365358853563).

The spelling of 320115342540 in words is "three hundred twenty billion, one hundred fifteen million, three hundred forty-two thousand, five hundred forty".