80900439071 has 4 divisors (see below), whose sum is σ = 80909786352. Its totient is φ = 80891091792.

The previous prime is 80900439007. The next prime is 80900439091. The reversal of 80900439071 is 17093400908.

It is a happy number.

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 80900439071 - 2⁶ = 80900439007 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 (80900439091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4660646 + ... + 4677971.

It is an arithmetic number, because the mean of its divisors is an integer number (20227446588).

Almost surely, 2^80900439071 is an apocalyptic number.

80900439071 is a deficient number, since it is larger than the sum of its proper divisors (9347281).

80900439071 is an equidigital number, since it uses as much as digits as its factorization.

80900439071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9347280.

The product of its (nonzero) digits is 54432, while the sum is 41.

Adding to 80900439071 its reverse (17093400908), we get a palindrome (97993839979).

The spelling of 80900439071 in words is "eighty billion, nine hundred million, four hundred thirty-nine thousand, seventy-one".