870615478707220 has 192 divisors, whose sum is σ = 1948247323626240. Its totient is φ = 325863917568000.

The previous prime is 870615478707217. The next prime is 870615478707229. The reversal of 870615478707220 is 22707874516078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870615478707229) 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 63 ways as a sum of consecutive naturals, for example, 38623629150 + ... + 38623651690.

It is an arithmetic number, because the mean of its divisors is an integer number (10147121477220).

Almost surely, 2^{870615478707220} 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 870615478707220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (974123661813120).

870615478707220 is an abundant number, since it is smaller than the sum of its proper divisors (1077631844919020).

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

870615478707220 is a wasteful number, since it uses less digits than its factorization.

870615478707220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24714 (or 24712 counting only the distinct ones).

The product of its (nonzero) digits is 73758720, while the sum is 64.

The spelling of 870615478707220 in words is "eight hundred seventy trillion, six hundred fifteen billion, four hundred seventy-eight million, seven hundred seven thousand, two hundred twenty".