320556434226656 has 24 divisors (see below), whose sum is σ = 634743430645464. Its totient is φ = 159351753427840.

The previous prime is 320556434226641. The next prime is 320556434226689. The reversal of 320556434226656 is 656622434655023.

It is a junction number, because it is equal to n+sod(n) for n = 320556434226595 and 320556434226604.

It is a congruent number.

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, 28951984550 + ... + 28951995621.

It is an arithmetic number, because the mean of its divisors is an integer number (26447642943561).

Almost surely, 2^{320556434226656} is an apocalyptic number.

It is an amenable number.

320556434226656 is a deficient number, since it is larger than the sum of its proper divisors (314186996418808).

320556434226656 is a wasteful number, since it uses less digits than its factorization.

320556434226656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57903980354 (or 57903980346 counting only the distinct ones).

The product of its (nonzero) digits is 186624000, while the sum is 59.

The spelling of 320556434226656 in words is "three hundred twenty trillion, five hundred fifty-six billion, four hundred thirty-four million, two hundred twenty-six thousand, six hundred fifty-six".