320150123440 has 80 divisors (see below), whose sum is σ = 850838899968. Its totient is φ = 109745849088.

The previous prime is 320150123413. The next prime is 320150123453. The reversal of 320150123440 is 44321051023.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×320150123440² (a number of 24 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 3223159 + ... + 3321001.

Almost surely, 2^320150123440 is an apocalyptic number.

It is an amenable number.

320150123440 is an abundant number, since it is smaller than the sum of its proper divisors (530688776528).

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

320150123440 is a wasteful number, since it uses less digits than its factorization.

320150123440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103706 (or 103700 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 320150123440 its reverse (44321051023), we get a palindrome (364471174463).

The spelling of 320150123440 in words is "three hundred twenty billion, one hundred fifty million, one hundred twenty-three thousand, four hundred forty".