80541964189 has 2 divisors, whose sum is σ = 80541964190. Its totient is φ = 80541964188.

The previous prime is 80541964171. The next prime is 80541964199. The reversal of 80541964189 is 98146914508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79070628025 + 1471336164 = 281195^2 + 38358^2 .

It is a cyclic number.

It is not a de Polignac number, because 80541964189 - 2⁵ = 80541964157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80541964199) 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 as a sum of consecutive naturals, namely, 40270982094 + 40270982095.

It is an arithmetic number, because the mean of its divisors is an integer number (40270982095).

Almost surely, 2^80541964189 is an apocalyptic number.

It is an amenable number.

80541964189 is a deficient number, since it is larger than the sum of its proper divisors (1).

80541964189 is an equidigital number, since it uses as much as digits as its factorization.

80541964189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 80541964189 in words is "eighty billion, five hundred forty-one million, nine hundred sixty-four thousand, one hundred eighty-nine".