85648435511 has 4 divisors (see below), whose sum is σ = 85685499024. Its totient is φ = 85611372000.

The previous prime is 85648435489. The next prime is 85648435513. The reversal of 85648435511 is 11553484658.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85648435511 is a prime.

It is a super-2 number, since 2×85648435511² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85648435511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85648435513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18528290 + ... + 18532911.

It is an arithmetic number, because the mean of its divisors is an integer number (21421374756).

Almost surely, 2^85648435511 is an apocalyptic number.

85648435511 is a deficient number, since it is larger than the sum of its proper divisors (37063513).

85648435511 is a wasteful number, since it uses less digits than its factorization.

85648435511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37063512.

The product of its digits is 2304000, while the sum is 50.

The spelling of 85648435511 in words is "eighty-five billion, six hundred forty-eight million, four hundred thirty-five thousand, five hundred eleven".