816445342379 has 2 divisors, whose sum is σ = 816445342380. Its totient is φ = 816445342378.

The previous prime is 816445342333. The next prime is 816445342403. The reversal of 816445342379 is 973243544618.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 816445342379 - 2⁸ = 816445342123 is a prime.

It is not a weakly prime, because it can be changed into another prime (816445342079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408222671189 + 408222671190.

It is an arithmetic number, because the mean of its divisors is an integer number (408222671190).

Almost surely, 2^816445342379 is an apocalyptic number.

816445342379 is a deficient number, since it is larger than the sum of its proper divisors (1).

816445342379 is an equidigital number, since it uses as much as digits as its factorization.

816445342379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17418240, while the sum is 56.

The spelling of 816445342379 in words is "eight hundred sixteen billion, four hundred forty-five million, three hundred forty-two thousand, three hundred seventy-nine".