320206344466553 has 2 divisors, whose sum is σ = 320206344466554. Its totient is φ = 320206344466552.

The previous prime is 320206344466517. The next prime is 320206344466637. The reversal of 320206344466553 is 355664443602023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 243156712071289 + 77049632395264 = 15593483^2 + 8777792^2 .

It is a cyclic number.

It is not a de Polignac number, because 320206344466553 - 2³⁸ = 319931466559609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 320206344466495 and 320206344466504.

It is not a weakly prime, because it can be changed into another prime (320206344468553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160103172233276 + 160103172233277.

It is an arithmetic number, because the mean of its divisors is an integer number (160103172233277).

Almost surely, 2^{320206344466553} is an apocalyptic number.

It is an amenable number.

320206344466553 is a deficient number, since it is larger than the sum of its proper divisors (1).

320206344466553 is an equidigital number, since it uses as much as digits as its factorization.

320206344466553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37324800, while the sum is 53.

The spelling of 320206344466553 in words is "three hundred twenty trillion, two hundred six billion, three hundred forty-four million, four hundred sixty-six thousand, five hundred fifty-three".