80028730012871 has 4 divisors (see below), whose sum is σ = 80049773595432. Its totient is φ = 80007686430312.

The previous prime is 80028730012843. The next prime is 80028730012873. The reversal of 80028730012871 is 17821003782008.

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

It is a cyclic number.

It is not a de Polignac number, because 80028730012871 - 2¹⁰ = 80028730011847 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 (80028730012873) 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, 10521785576 + ... + 10521793181.

It is an arithmetic number, because the mean of its divisors is an integer number (20012443398858).

Almost surely, 2^{80028730012871} is an apocalyptic number.

80028730012871 is a deficient number, since it is larger than the sum of its proper divisors (21043582561).

80028730012871 is a wasteful number, since it uses less digits than its factorization.

80028730012871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21043582560.

The product of its (nonzero) digits is 301056, while the sum is 47.

Adding to 80028730012871 its reverse (17821003782008), we get a palindrome (97849733794879).

The spelling of 80028730012871 in words is "eighty trillion, twenty-eight billion, seven hundred thirty million, twelve thousand, eight hundred seventy-one".