320376656577 has 16 divisors (see below), whose sum is σ = 452435474880. Its totient is φ = 200958861312.

The previous prime is 320376656549. The next prime is 320376656591. The reversal of 320376656577 is 775656673023.

It is not a de Polignac number, because 320376656577 - 2¹² = 320376652481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320376656777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 797568 + ... + 1129985.

It is an arithmetic number, because the mean of its divisors is an integer number (28277217180).

Almost surely, 2^320376656577 is an apocalyptic number.

It is an amenable number.

320376656577 is a deficient number, since it is larger than the sum of its proper divisors (132058818303).

320376656577 is a wasteful number, since it uses less digits than its factorization.

320376656577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930832.

The product of its (nonzero) digits is 33339600, while the sum is 57.

The spelling of 320376656577 in words is "three hundred twenty billion, three hundred seventy-six million, six hundred fifty-six thousand, five hundred seventy-seven".