385336251673 has 2 divisors, whose sum is σ = 385336251674. Its totient is φ = 385336251672.

The previous prime is 385336251649. The next prime is 385336251709. The reversal of 385336251673 is 376152633583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 365351340249 + 19984911424 = 604443^2 + 141368^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385336251673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 385336251673.

It is not a weakly prime, because it can be changed into another prime (385336251613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192668125836 + 192668125837.

It is an arithmetic number, because the mean of its divisors is an integer number (192668125837).

Almost surely, 2^385336251673 is an apocalyptic number.

It is an amenable number.

385336251673 is a deficient number, since it is larger than the sum of its proper divisors (1).

385336251673 is an equidigital number, since it uses as much as digits as its factorization.

385336251673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8164800, while the sum is 52.

The spelling of 385336251673 in words is "three hundred eighty-five billion, three hundred thirty-six million, two hundred fifty-one thousand, six hundred seventy-three".