85865512546501 has 2 divisors, whose sum is σ = 85865512546502. Its totient is φ = 85865512546500.

The previous prime is 85865512546433. The next prime is 85865512546621. The reversal of 85865512546501 is 10564521556858.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68699398020100 + 17166114526401 = 8288510^2 + 4143201^2 .

It is a cyclic number.

It is not a de Polignac number, because 85865512546501 - 2⁴⁵ = 50681140457669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85865512546501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85865512543501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42932756273250 + 42932756273251.

It is an arithmetic number, because the mean of its divisors is an integer number (42932756273251).

Almost surely, 2^{85865512546501} is an apocalyptic number.

It is an amenable number.

85865512546501 is a deficient number, since it is larger than the sum of its proper divisors (1).

85865512546501 is an equidigital number, since it uses as much as digits as its factorization.

85865512546501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600000, while the sum is 61.

The spelling of 85865512546501 in words is "eighty-five trillion, eight hundred sixty-five billion, five hundred twelve million, five hundred forty-six thousand, five hundred one".