381603891793177 has 2 divisors, whose sum is σ = 381603891793178. Its totient is φ = 381603891793176.

The previous prime is 381603891793169. The next prime is 381603891793247. The reversal of 381603891793177 is 771397198306183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 379917051914521 + 1686839878656 = 19491461^2 + 1298784^2 .

It is a cyclic number.

It is not a de Polignac number, because 381603891793177 - 2³ = 381603891793169 is a prime.

It is not a weakly prime, because it can be changed into another prime (381603811793177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190801945896588 + 190801945896589.

It is an arithmetic number, because the mean of its divisors is an integer number (190801945896589).

Almost surely, 2^{381603891793177} is an apocalyptic number.

It is an amenable number.

381603891793177 is a deficient number, since it is larger than the sum of its proper divisors (1).

381603891793177 is an equidigital number, since it uses as much as digits as its factorization.

381603891793177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288054144, while the sum is 73.

The spelling of 381603891793177 in words is "three hundred eighty-one trillion, six hundred three billion, eight hundred ninety-one million, seven hundred ninety-three thousand, one hundred seventy-seven".