320605633157 has 2 divisors, whose sum is σ = 320605633158. Its totient is φ = 320605633156.

The previous prime is 320605633133. The next prime is 320605633193. The reversal of 320605633157 is 751336506023.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 216112484641 + 104493148516 = 464879^2 + 323254^2 .

It is a cyclic number.

It is not a de Polignac number, because 320605633157 - 2¹⁶ = 320605567621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320605633457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160302816578 + 160302816579.

It is an arithmetic number, because the mean of its divisors is an integer number (160302816579).

Almost surely, 2^320605633157 is an apocalyptic number.

It is an amenable number.

320605633157 is a deficient number, since it is larger than the sum of its proper divisors (1).

320605633157 is an equidigital number, since it uses as much as digits as its factorization.

320605633157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 340200, while the sum is 41.

The spelling of 320605633157 in words is "three hundred twenty billion, six hundred five million, six hundred thirty-three thousand, one hundred fifty-seven".