80432731889 has 2 divisors, whose sum is σ = 80432731890. Its totient is φ = 80432731888.

The previous prime is 80432731861. The next prime is 80432731927. The reversal of 80432731889 is 98813723408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71299680400 + 9133051489 = 267020^2 + 95567^2 .

It is a cyclic number.

It is not a de Polignac number, because 80432731889 - 2⁸ = 80432731633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80432731889.

It is not a weakly prime, because it can be changed into another prime (80432731849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40216365944 + 40216365945.

It is an arithmetic number, because the mean of its divisors is an integer number (40216365945).

Almost surely, 2^80432731889 is an apocalyptic number.

It is an amenable number.

80432731889 is a deficient number, since it is larger than the sum of its proper divisors (1).

80432731889 is an equidigital number, since it uses as much as digits as its factorization.

80432731889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 80432731889 in words is "eighty billion, four hundred thirty-two million, seven hundred thirty-one thousand, eight hundred eighty-nine".