671162433220 has 96 divisors (see below), whose sum is σ = 1469674926720. Its totient is φ = 257145477120.

The previous prime is 671162433217. The next prime is 671162433233. The reversal of 671162433220 is 22334261176.

671162433220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 671162433220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53976124 + ... + 53988556.

It is an arithmetic number, because the mean of its divisors is an integer number (15309113820).

Almost surely, 2^671162433220 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 671162433220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (734837463360).

671162433220 is an abundant number, since it is smaller than the sum of its proper divisors (798512493500).

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

671162433220 is a wasteful number, since it uses less digits than its factorization.

671162433220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13205 (or 13203 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

Adding to 671162433220 its reverse (22334261176), we get a palindrome (693496694396).

The spelling of 671162433220 in words is "six hundred seventy-one billion, one hundred sixty-two million, four hundred thirty-three thousand, two hundred twenty".