381923055361 has 2 divisors, whose sum is σ = 381923055362. Its totient is φ = 381923055360.

The previous prime is 381923055337. The next prime is 381923055413. The reversal of 381923055361 is 163550329183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211121870400 + 170801184961 = 459480^2 + 413281^2 .

It is a cyclic number.

It is not a de Polignac number, because 381923055361 - 2¹¹ = 381923053313 is a prime.

It is not a weakly prime, because it can be changed into another prime (381923055331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190961527680 + 190961527681.

It is an arithmetic number, because the mean of its divisors is an integer number (190961527681).

Almost surely, 2^381923055361 is an apocalyptic number.

It is an amenable number.

381923055361 is a deficient number, since it is larger than the sum of its proper divisors (1).

381923055361 is an equidigital number, since it uses as much as digits as its factorization.

381923055361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 46.

The spelling of 381923055361 in words is "three hundred eighty-one billion, nine hundred twenty-three million, fifty-five thousand, three hundred sixty-one".