80818300517 has 4 divisors (see below), whose sum is σ = 81454665216. Its totient is φ = 80181935820.

The previous prime is 80818300499. The next prime is 80818300559. The reversal of 80818300517 is 71500381808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80818300517 - 2²⁰ = 80817251941 is a prime.

It is a super-2 number, since 2×80818300517² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80818300417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318182159 + ... + 318182412.

It is an arithmetic number, because the mean of its divisors is an integer number (20363666304).

Almost surely, 2^80818300517 is an apocalyptic number.

It is an amenable number.

80818300517 is a deficient number, since it is larger than the sum of its proper divisors (636364699).

80818300517 is a wasteful number, since it uses less digits than its factorization.

80818300517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636364698.

The product of its (nonzero) digits is 53760, while the sum is 41.

The spelling of 80818300517 in words is "eighty billion, eight hundred eighteen million, three hundred thousand, five hundred seventeen".