85870729216 has 96 divisors (see below), whose sum is σ = 181266649200. Its totient is φ = 40668954624.

The previous prime is 85870729211. The next prime is 85870729223. The reversal of 85870729216 is 61292707858.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85870729211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14044176 + ... + 14050288.

Almost surely, 2^85870729216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85870729216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90633324600).

85870729216 is an abundant number, since it is smaller than the sum of its proper divisors (95395919984).

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

85870729216 is an frugal number, since it uses more digits than its factorization.

85870729216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6192 (or 6134 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 55.

The spelling of 85870729216 in words is "eighty-five billion, eight hundred seventy million, seven hundred twenty-nine thousand, two hundred sixteen".