819795404493808 has 40 divisors (see below), whose sum is σ = 1615078867461696. Its totient is φ = 403006574496000.

The previous prime is 819795404493803. The next prime is 819795404493851. The reversal of 819795404493808 is 808394404597918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819795404493803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176343091 + ... + 180932242.

Almost surely, 2^{819795404493808} is an apocalyptic number.

It is an amenable number.

819795404493808 is a deficient number, since it is larger than the sum of its proper divisors (795283462967888).

819795404493808 is a wasteful number, since it uses less digits than its factorization.

819795404493808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357277753 (or 357277747 counting only the distinct ones).

The product of its (nonzero) digits is 2508226560, while the sum is 79.

The spelling of 819795404493808 in words is "eight hundred nineteen trillion, seven hundred ninety-five billion, four hundred four million, four hundred ninety-three thousand, eight hundred eight".