80816219359 has 4 divisors (see below), whose sum is σ = 80816830704. Its totient is φ = 80815608016.

The previous prime is 80816219257. The next prime is 80816219377. The reversal of 80816219359 is 95391261808.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 80816219359 - 2¹¹ = 80816217311 is a prime.

It is a super-2 number, since 2×80816219359² (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 (80816219399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15667 + ... + 402340.

It is an arithmetic number, because the mean of its divisors is an integer number (20204207676).

Almost surely, 2^80816219359 is an apocalyptic number.

80816219359 is a deficient number, since it is larger than the sum of its proper divisors (611345).

80816219359 is a wasteful number, since it uses less digits than its factorization.

80816219359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611344.

The product of its (nonzero) digits is 933120, while the sum is 52.

The spelling of 80816219359 in words is "eighty billion, eight hundred sixteen million, two hundred nineteen thousand, three hundred fifty-nine".