85835009866 has 16 divisors (see below), whose sum is σ = 136147431168. Its totient is φ = 40520066400.

The previous prime is 85835009809. The next prime is 85835009867. The reversal of 85835009866 is 66890053858.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 85835009866.

It is not an unprimeable number, because it can be changed into a prime (85835009867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16880820 + ... + 16885903.

It is an arithmetic number, because the mean of its divisors is an integer number (8509214448).

Almost surely, 2^85835009866 is an apocalyptic number.

85835009866 is a deficient number, since it is larger than the sum of its proper divisors (50312421302).

85835009866 is a wasteful number, since it uses less digits than its factorization.

85835009866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33766797.

The product of its (nonzero) digits is 12441600, while the sum is 58.

The spelling of 85835009866 in words is "eighty-five billion, eight hundred thirty-five million, nine thousand, eight hundred sixty-six".