85672940117 has 2 divisors, whose sum is σ = 85672940118. Its totient is φ = 85672940116.

The previous prime is 85672940063. The next prime is 85672940131. The reversal of 85672940117 is 71104927658.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61009494001 + 24663446116 = 247001^2 + 157046^2 .

It is a cyclic number.

It is not a de Polignac number, because 85672940117 - 2¹⁸ = 85672677973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85672940167) 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, 42836470058 + 42836470059.

It is an arithmetic number, because the mean of its divisors is an integer number (42836470059).

Almost surely, 2^85672940117 is an apocalyptic number.

It is an amenable number.

85672940117 is a deficient number, since it is larger than the sum of its proper divisors (1).

85672940117 is an equidigital number, since it uses as much as digits as its factorization.

85672940117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 846720, while the sum is 50.

The spelling of 85672940117 in words is "eighty-five billion, six hundred seventy-two million, nine hundred forty thousand, one hundred seventeen".