85837086720029 has 2 divisors, whose sum is σ = 85837086720030. Its totient is φ = 85837086720028.

The previous prime is 85837086719977. The next prime is 85837086720067. The reversal of 85837086720029 is 92002768073858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43400031136900 + 42437055583129 = 6587870^2 + 6514373^2 .

It is a cyclic number.

It is not a de Polignac number, because 85837086720029 - 2¹⁶ = 85837086654493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85837086725029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42918543360014 + 42918543360015.

It is an arithmetic number, because the mean of its divisors is an integer number (42918543360015).

Almost surely, 2^{85837086720029} is an apocalyptic number.

It is an amenable number.

85837086720029 is a deficient number, since it is larger than the sum of its proper divisors (1).

85837086720029 is an equidigital number, since it uses as much as digits as its factorization.

85837086720029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81285120, while the sum is 65.

The spelling of 85837086720029 in words is "eighty-five trillion, eight hundred thirty-seven billion, eighty-six million, seven hundred twenty thousand, twenty-nine".