85681522518658 has 16 divisors (see below), whose sum is σ = 140206273708320. Its totient is φ = 38946106057600.

The previous prime is 85681522518619. The next prime is 85681522518659.

85681522518658 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×85681522518658² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85681522518659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33162258 + ... + 35652466.

It is an arithmetic number, because the mean of its divisors is an integer number (8762892106770).

Almost surely, 2^{85681522518658} is an apocalyptic number.

85681522518658 is a deficient number, since it is larger than the sum of its proper divisors (54524751189662).

85681522518658 is a wasteful number, since it uses less digits than its factorization.

85681522518658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054193.

The product of its digits is 368640000, while the sum is 70.

The spelling of 85681522518658 in words is "eighty-five trillion, six hundred eighty-one billion, five hundred twenty-two million, five hundred eighteen thousand, six hundred fifty-eight".