80500853178161 has 4 divisors (see below), whose sum is σ = 86693226499572. Its totient is φ = 74308479856752.

The previous prime is 80500853178133. The next prime is 80500853178197. The reversal of 80500853178161 is 16187135800508.

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

It can be written as a sum of positive squares in 2 ways, for example, as 45367552975936 + 35133300202225 = 6735544^2 + 5927335^2 .

It is a cyclic number.

It is not a de Polignac number, because 80500853178161 - 2¹⁴ = 80500853161777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80500853178661) 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, 3096186660686 + ... + 3096186660711.

It is an arithmetic number, because the mean of its divisors is an integer number (21673306624893).

Almost surely, 2^{80500853178161} is an apocalyptic number.

It is an amenable number.

80500853178161 is a deficient number, since it is larger than the sum of its proper divisors (6192373321411).

80500853178161 is a wasteful number, since it uses less digits than its factorization.

80500853178161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6192373321410.

The product of its (nonzero) digits is 1612800, while the sum is 53.

Adding to 80500853178161 its reverse (16187135800508), we get a palindrome (96687988978669).

The spelling of 80500853178161 in words is "eighty trillion, five hundred billion, eight hundred fifty-three million, one hundred seventy-eight thousand, one hundred sixty-one".