816519762163 has 4 divisors (see below), whose sum is σ = 933165442480. Its totient is φ = 699874081848.

The previous prime is 816519762077. The next prime is 816519762169. The reversal of 816519762163 is 361267915618.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-816519762163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (816519762169) 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 3 ways as a sum of consecutive naturals, for example, 58322840148 + ... + 58322840161.

It is an arithmetic number, because the mean of its divisors is an integer number (233291360620).

Almost surely, 2^816519762163 is an apocalyptic number.

816519762163 is a deficient number, since it is larger than the sum of its proper divisors (116645680317).

816519762163 is a wasteful number, since it uses less digits than its factorization.

816519762163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116645680316.

The product of its digits is 3265920, while the sum is 55.

The spelling of 816519762163 in words is "eight hundred sixteen billion, five hundred nineteen million, seven hundred sixty-two thousand, one hundred sixty-three".