819464966377 has 2 divisors, whose sum is σ = 819464966378. Its totient is φ = 819464966376.

The previous prime is 819464966321. The next prime is 819464966423. The reversal of 819464966377 is 773669464918.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 795742497936 + 23722468441 = 892044^2 + 154021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-819464966377 is a prime.

It is a super-2 number, since 2×819464966377² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (819464966977) 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, 409732483188 + 409732483189.

It is an arithmetic number, because the mean of its divisors is an integer number (409732483189).

Almost surely, 2^819464966377 is an apocalyptic number.

It is an amenable number.

819464966377 is a deficient number, since it is larger than the sum of its proper divisors (1).

819464966377 is an equidigital number, since it uses as much as digits as its factorization.

819464966377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 329204736, while the sum is 70.

The spelling of 819464966377 in words is "eight hundred nineteen billion, four hundred sixty-four million, nine hundred sixty-six thousand, three hundred seventy-seven".