320494992768 has 48 divisors (see below), whose sum is σ = 922257729900. Its totient is φ = 106831663872.

The previous prime is 320494992767. The next prime is 320494992803. The reversal of 320494992768 is 867299494023.

320494992768 is a `hidden beast` number, since 3 + 20 + 49 + 499 + 27 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320494992767) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139102578 + ... + 139104881.

Almost surely, 2^320494992768 is an apocalyptic number.

It is an amenable number.

320494992768 is an abundant number, since it is smaller than the sum of its proper divisors (601762737132).

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

320494992768 is a wasteful number, since it uses less digits than its factorization.

320494992768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278207479 (or 278207464 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 320494992768 in words is "three hundred twenty billion, four hundred ninety-four million, nine hundred ninety-two thousand, seven hundred sixty-eight".