320656549454642 has 16 divisors (see below), whose sum is σ = 481131934020000. Its totient is φ = 160279239600480.

The previous prime is 320656549454641. The next prime is 320656549454651. The reversal of 320656549454642 is 246454945656023.

It is not an unprimeable number, because it can be changed into a prime (320656549454641) 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, 478186109 + ... + 478856207.

It is an arithmetic number, because the mean of its divisors is an integer number (30070745876250).

Almost surely, 2^{320656549454642} is an apocalyptic number.

320656549454642 is a deficient number, since it is larger than the sum of its proper divisors (160475384565358).

320656549454642 is a wasteful number, since it uses less digits than its factorization.

320656549454642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742921.

The product of its (nonzero) digits is 746496000, while the sum is 65.

The spelling of 320656549454642 in words is "three hundred twenty trillion, six hundred fifty-six billion, five hundred forty-nine million, four hundred fifty-four thousand, six hundred forty-two".