85626807869 has 2 divisors, whose sum is σ = 85626807870. Its totient is φ = 85626807868.

The previous prime is 85626807823. The next prime is 85626807923. The reversal of 85626807869 is 96870862658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68414679844 + 17212128025 = 261562^2 + 131195^2 .

It is a cyclic number.

It is not a de Polignac number, because 85626807869 - 2⁸ = 85626807613 is a prime.

It is a super-2 number, since 2×85626807869² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85626807809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42813403934 + 42813403935.

It is an arithmetic number, because the mean of its divisors is an integer number (42813403935).

Almost surely, 2^85626807869 is an apocalyptic number.

It is an amenable number.

85626807869 is a deficient number, since it is larger than the sum of its proper divisors (1).

85626807869 is an equidigital number, since it uses as much as digits as its factorization.

85626807869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69672960, while the sum is 65.

The spelling of 85626807869 in words is "eighty-five billion, six hundred twenty-six million, eight hundred seven thousand, eight hundred sixty-nine".