85868131533736 has 128 divisors (see below), whose sum is σ = 173678245644960. Its totient is φ = 39656816640000.

The previous prime is 85868131533733. The next prime is 85868131533827. The reversal of 85868131533736 is 63733513186858.

It can be written as a sum of positive squares in 16 ways, for example, as 42775602573636 + 43092528960100 = 6540306^2 + 6564490^2 .

It is a super-2 number, since 2×85868131533736² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85868131533731) 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 31 ways as a sum of consecutive naturals, for example, 1266439036 + ... + 1266506836.

Almost surely, 2^{85868131533736} is an apocalyptic number.

It is an amenable number.

85868131533736 is an abundant number, since it is smaller than the sum of its proper divisors (87810114111224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85868131533736 is a wasteful number, since it uses less digits than its factorization.

85868131533736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68735 (or 68731 counting only the distinct ones).

The product of its digits is 261273600, while the sum is 67.

The spelling of 85868131533736 in words is "eighty-five trillion, eight hundred sixty-eight billion, one hundred thirty-one million, five hundred thirty-three thousand, seven hundred thirty-six".