320656307487 has 8 divisors (see below), whose sum is σ = 427970575536. Its totient is φ = 213556455552.

The previous prime is 320656307473. The next prime is 320656307539. The reversal of 320656307487 is 784703656023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 320656307487 - 2¹¹ = 320656305439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320656307407) 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, 53600538 + ... + 53606519.

It is an arithmetic number, because the mean of its divisors is an integer number (53496321942).

Almost surely, 2^320656307487 is an apocalyptic number.

320656307487 is a deficient number, since it is larger than the sum of its proper divisors (107314268049).

320656307487 is a wasteful number, since it uses less digits than its factorization.

320656307487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107208057.

The product of its (nonzero) digits is 5080320, while the sum is 51.

The spelling of 320656307487 in words is "three hundred twenty billion, six hundred fifty-six million, three hundred seven thousand, four hundred eighty-seven".