75845189989 has 2 divisors, whose sum is σ = 75845189990. Its totient is φ = 75845189988.

The previous prime is 75845189977. The next prime is 75845190053. The reversal of 75845189989 is 98998154857.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41141225889 + 34703964100 = 202833^2 + 186290^2 .

It is a cyclic number.

It is not a de Polignac number, because 75845189989 - 2²¹ = 75843092837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75845189929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37922594994 + 37922594995.

It is an arithmetic number, because the mean of its divisors is an integer number (37922594995).

Almost surely, 2^75845189989 is an apocalyptic number.

It is an amenable number.

75845189989 is a deficient number, since it is larger than the sum of its proper divisors (1).

75845189989 is an equidigital number, since it uses as much as digits as its factorization.

75845189989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 261273600, while the sum is 73.

The spelling of 75845189989 in words is "seventy-five billion, eight hundred forty-five million, one hundred eighty-nine thousand, nine hundred eighty-nine".