384487257361 has 2 divisors, whose sum is σ = 384487257362. Its totient is φ = 384487257360.

The previous prime is 384487257299. The next prime is 384487257409. The reversal of 384487257361 is 163752784483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197530469136 + 186956788225 = 444444^2 + 432385^2 .

It is an emirp because it is prime and its reverse (163752784483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 384487257361 - 2²¹ = 384485160209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 384487257296 and 384487257305.

It is not a weakly prime, because it can be changed into another prime (384487251361) 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, 192243628680 + 192243628681.

It is an arithmetic number, because the mean of its divisors is an integer number (192243628681).

Almost surely, 2^384487257361 is an apocalyptic number.

It is an amenable number.

384487257361 is a deficient number, since it is larger than the sum of its proper divisors (1).

384487257361 is an equidigital number, since it uses as much as digits as its factorization.

384487257361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27095040, while the sum is 58.

The spelling of 384487257361 in words is "three hundred eighty-four billion, four hundred eighty-seven million, two hundred fifty-seven thousand, three hundred sixty-one".