381603891793247 has 2 divisors, whose sum is σ = 381603891793248. Its totient is φ = 381603891793246.

The previous prime is 381603891793177. The next prime is 381603891793249. The reversal of 381603891793247 is 742397198306183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381603891793247 - 2¹⁶ = 381603891727711 is a prime.

Together with 381603891793249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381603891793249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190801945896623 + 190801945896624.

It is an arithmetic number, because the mean of its divisors is an integer number (190801945896624).

Almost surely, 2^{381603891793247} is an apocalyptic number.

381603891793247 is a deficient number, since it is larger than the sum of its proper divisors (1).

381603891793247 is an equidigital number, since it uses as much as digits as its factorization.

381603891793247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 329204736, while the sum is 71.

The spelling of 381603891793247 in words is "three hundred eighty-one trillion, six hundred three billion, eight hundred ninety-one million, seven hundred ninety-three thousand, two hundred forty-seven".