320747137768 has 16 divisors (see below), whose sum is σ = 601462908000. Its totient is φ = 160357028976.

The previous prime is 320747137759. The next prime is 320747137783. The reversal of 320747137768 is 867731747023.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1984878 + ... + 2140381.

It is an arithmetic number, because the mean of its divisors is an integer number (37591431750).

Almost surely, 2^320747137768 is an apocalyptic number.

It is an amenable number.

320747137768 is a deficient number, since it is larger than the sum of its proper divisors (280715770232).

320747137768 is a wasteful number, since it uses less digits than its factorization.

320747137768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134984 (or 4134980 counting only the distinct ones).

The product of its (nonzero) digits is 8297856, while the sum is 55.

The spelling of 320747137768 in words is "three hundred twenty billion, seven hundred forty-seven million, one hundred thirty-seven thousand, seven hundred sixty-eight".