378832816771 has 2 divisors, whose sum is σ = 378832816772. Its totient is φ = 378832816770.

The previous prime is 378832816727. The next prime is 378832816877. The reversal of 378832816771 is 177618238873.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378832816771 is a prime.

It is not a weakly prime, because it can be changed into another prime (378832816711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189416408385 + 189416408386.

It is an arithmetic number, because the mean of its divisors is an integer number (189416408386).

Almost surely, 2^378832816771 is an apocalyptic number.

378832816771 is a deficient number, since it is larger than the sum of its proper divisors (1).

378832816771 is an equidigital number, since it uses as much as digits as its factorization.

378832816771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18966528, while the sum is 61.

The spelling of 378832816771 in words is "three hundred seventy-eight billion, eight hundred thirty-two million, eight hundred sixteen thousand, seven hundred seventy-one".