380636675681 has 2 divisors, whose sum is σ = 380636675682. Its totient is φ = 380636675680.

The previous prime is 380636675641. The next prime is 380636675689. The reversal of 380636675681 is 186576636083.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325219278400 + 55417397281 = 570280^2 + 235409^2 .

It is an emirp because it is prime and its reverse (186576636083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 380636675681 - 2²² = 380632481377 is a prime.

It is a super-2 number, since 2×380636675681² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 380636675681.

It is not a weakly prime, because it can be changed into another prime (380636675689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190318337840 + 190318337841.

It is an arithmetic number, because the mean of its divisors is an integer number (190318337841).

Almost surely, 2^380636675681 is an apocalyptic number.

It is an amenable number.

380636675681 is a deficient number, since it is larger than the sum of its proper divisors (1).

380636675681 is an equidigital number, since it uses as much as digits as its factorization.

380636675681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26127360, while the sum is 59.

The spelling of 380636675681 in words is "three hundred eighty billion, six hundred thirty-six million, six hundred seventy-five thousand, six hundred eighty-one".