320206344466651 has 2 divisors, whose sum is σ = 320206344466652. Its totient is φ = 320206344466650.

The previous prime is 320206344466643. The next prime is 320206344466703. The reversal of 320206344466651 is 156664443602023.

It is an a-pointer prime, because the next prime (320206344466703) can be obtained adding 320206344466651 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320206344466651 - 2³ = 320206344466643 is a prime.

It is not a weakly prime, because it can be changed into another prime (320206344464651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160103172233325 + 160103172233326.

It is an arithmetic number, because the mean of its divisors is an integer number (160103172233326).

Almost surely, 2^{320206344466651} is an apocalyptic number.

320206344466651 is a deficient number, since it is larger than the sum of its proper divisors (1).

320206344466651 is an equidigital number, since it uses as much as digits as its factorization.

320206344466651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14929920, while the sum is 52.

The spelling of 320206344466651 in words is "three hundred twenty trillion, two hundred six billion, three hundred forty-four million, four hundred sixty-six thousand, six hundred fifty-one".