320487528813 has 8 divisors (see below), whose sum is σ = 442051764000. Its totient is φ = 206290823088.

The previous prime is 320487528793. The next prime is 320487528817. The reversal of 320487528813 is 318825784023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-320487528813 is a prime.

It is a super-2 number, since 2×320487528813² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320487528817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1841882263 + ... + 1841882436.

It is an arithmetic number, because the mean of its divisors is an integer number (55256470500).

Almost surely, 2^320487528813 is an apocalyptic number.

It is an amenable number.

320487528813 is a deficient number, since it is larger than the sum of its proper divisors (121564235187).

320487528813 is a wasteful number, since it uses less digits than its factorization.

320487528813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3683764731.

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 320487528813 in words is "three hundred twenty billion, four hundred eighty-seven million, five hundred twenty-eight thousand, eight hundred thirteen".