320200346051660 has 48 divisors (see below), whose sum is σ = 690507025018272. Its totient is φ = 124656329280000.

The previous prime is 320200346051639. The next prime is 320200346051699. The reversal of 320200346051660 is 66150643002023.

It is a happy number.

It is a super-2 number, since 2×320200346051660² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 662260091 + ... + 662743410.

It is an arithmetic number, because the mean of its divisors is an integer number (14385563021214).

Almost surely, 2^{320200346051660} is an apocalyptic number.

It is an amenable number.

320200346051660 is an abundant number, since it is smaller than the sum of its proper divisors (370306678966612).

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

320200346051660 is a wasteful number, since it uses less digits than its factorization.

320200346051660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325003834 (or 1325003832 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 38.

Adding to 320200346051660 its reverse (66150643002023), we get a palindrome (386350989053683).

The spelling of 320200346051660 in words is "three hundred twenty trillion, two hundred billion, three hundred forty-six million, fifty-one thousand, six hundred sixty".