816905103797 has 16 divisors (see below), whose sum is σ = 869650776960. Its totient is φ = 765150769152.

The previous prime is 816905103769. The next prime is 816905103809. The reversal of 816905103797 is 797301509618.

It is a cyclic number.

It is not a de Polignac number, because 816905103797 - 2¹⁴ = 816905087413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816905103727) 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 in 15 ways as a sum of consecutive naturals, for example, 1586213 + ... + 2037125.

It is an arithmetic number, because the mean of its divisors is an integer number (54353173560).

Almost surely, 2^816905103797 is an apocalyptic number.

It is an amenable number.

816905103797 is a deficient number, since it is larger than the sum of its proper divisors (52745673163).

816905103797 is a wasteful number, since it uses less digits than its factorization.

816905103797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452012.

The product of its (nonzero) digits is 2857680, while the sum is 56.

The spelling of 816905103797 in words is "eight hundred sixteen billion, nine hundred five million, one hundred three thousand, seven hundred ninety-seven".