867170520220 has 24 divisors (see below), whose sum is σ = 1825404310800. Its totient is φ = 346040356992.

The previous prime is 867170520191. The next prime is 867170520221. The reversal of 867170520220 is 22025071768.

It is a happy number.

It is a super-2 number, since 2×867170520220² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (867170520221) 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 7 ways as a sum of consecutive naturals, for example, 51732105 + ... + 51748864.

It is an arithmetic number, because the mean of its divisors is an integer number (76058512950).

Almost surely, 2^867170520220 is an apocalyptic number.

It is an amenable number.

867170520220 is an abundant number, since it is smaller than the sum of its proper divisors (958233790580).

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

867170520220 is a wasteful number, since it uses less digits than its factorization.

867170520220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103481397 (or 103481395 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 40.

Adding to 867170520220 its reverse (22025071768), we get a palindrome (889195591988).

The spelling of 867170520220 in words is "eight hundred sixty-seven billion, one hundred seventy million, five hundred twenty thousand, two hundred twenty".