85534874189 has 2 divisors, whose sum is σ = 85534874190. Its totient is φ = 85534874188.

The previous prime is 85534874149. The next prime is 85534874231. The reversal of 85534874189 is 98147843558.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75707522500 + 9827351689 = 275150^2 + 99133^2 .

It is a cyclic number.

It is not a de Polignac number, because 85534874189 - 2⁸ = 85534873933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85534874119) 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, 42767437094 + 42767437095.

It is an arithmetic number, because the mean of its divisors is an integer number (42767437095).

Almost surely, 2^85534874189 is an apocalyptic number.

It is an amenable number.

85534874189 is a deficient number, since it is larger than the sum of its proper divisors (1).

85534874189 is an equidigital number, since it uses as much as digits as its factorization.

85534874189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38707200, while the sum is 62.

The spelling of 85534874189 in words is "eighty-five billion, five hundred thirty-four million, eight hundred seventy-four thousand, one hundred eighty-nine".