320363011645993 has 2 divisors, whose sum is σ = 320363011645994. Its totient is φ = 320363011645992.

The previous prime is 320363011645889. The next prime is 320363011646003. The reversal of 320363011645993 is 399546110363023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179514228517264 + 140848783128729 = 13398292^2 + 11867973^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320363011645993 is a prime.

It is not a weakly prime, because it can be changed into another prime (320363011645393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160181505822996 + 160181505822997.

It is an arithmetic number, because the mean of its divisors is an integer number (160181505822997).

Almost surely, 2^{320363011645993} is an apocalyptic number.

It is an amenable number.

320363011645993 is a deficient number, since it is larger than the sum of its proper divisors (1).

320363011645993 is an equidigital number, since it uses as much as digits as its factorization.

320363011645993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9447840, while the sum is 55.

The spelling of 320363011645993 in words is "three hundred twenty trillion, three hundred sixty-three billion, eleven million, six hundred forty-five thousand, nine hundred ninety-three".