320164531513650 has 72 divisors (see below), whose sum is σ = 860186686988304. Its totient is φ = 85376085592800.

The previous prime is 320164531513577. The next prime is 320164531513711. The reversal of 320164531513650 is 56315135461023.

320164531513650 is a `hidden beast` number, since 3 + 2 + 0 + 1 + 6 + 4 + 531 + 51 + 3 + 65 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 320164531513596 and 320164531513605.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29860105 + ... + 39140195.

It is an arithmetic number, because the mean of its divisors is an integer number (11947037319282).

Almost surely, 2^{320164531513650} is an apocalyptic number.

320164531513650 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

320164531513650 is an abundant number, since it is smaller than the sum of its proper divisors (540022155474654).

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

320164531513650 is a wasteful number, since it uses less digits than its factorization.

320164531513650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9356776 (or 9356768 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

Adding to 320164531513650 its reverse (56315135461023), we get a palindrome (376479666974673).

The spelling of 320164531513650 in words is "three hundred twenty trillion, one hundred sixty-four billion, five hundred thirty-one million, five hundred thirteen thousand, six hundred fifty".