85869218370636 has 72 divisors (see below), whose sum is σ = 217433103014400. Its totient is φ = 28573653959136.

The previous prime is 85869218370631. The next prime is 85869218370721. The reversal of 85869218370636 is 63607381296858.

It is a happy number.

85869218370636 is a `hidden beast` number, since 8 + 5 + 8 + 6 + 9 + 218 + 370 + 6 + 36 = 666.

It is a super-2 number, since 2×85869218370636² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85869218370631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 411487755 + ... + 411696381.

Almost surely, 2^{85869218370636} is an apocalyptic number.

It is an amenable number.

85869218370636 is an abundant number, since it is smaller than the sum of its proper divisors (131563884643764).

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

85869218370636 is a wasteful number, since it uses less digits than its factorization.

85869218370636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228323 (or 228318 counting only the distinct ones).

The product of its (nonzero) digits is 627056640, while the sum is 72.

The spelling of 85869218370636 in words is "eighty-five trillion, eight hundred sixty-nine billion, two hundred eighteen million, three hundred seventy thousand, six hundred thirty-six".