85066804017 has 40 divisors (see below), whose sum is σ = 138261102056. Its totient is φ = 51809061888.

The previous prime is 85066804013. The next prime is 85066804027. The reversal of 85066804017 is 71040866058.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19937722401 + 65129081616 = 141201^2 + 255204^2 .

It is not a de Polignac number, because 85066804017 - 2² = 85066804013 is a prime.

It is a super-2 number, since 2×85066804017² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85066804013) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 314278 + ... + 518559.

Almost surely, 2^85066804017 is an apocalyptic number.

It is an amenable number.

85066804017 is a deficient number, since it is larger than the sum of its proper divisors (53194298039).

85066804017 is a wasteful number, since it uses less digits than its factorization.

85066804017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832959 (or 832950 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 85066804017 in words is "eighty-five billion, sixty-six million, eight hundred four thousand, seventeen".