671202200120 has 64 divisors (see below), whose sum is σ = 1600782004800. Its totient is φ = 252412692480.

The previous prime is 671202200107. The next prime is 671202200131. The reversal of 671202200120 is 21002202176.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 87890 + ... + 1161950.

It is an arithmetic number, because the mean of its divisors is an integer number (25012218825).

Almost surely, 2^671202200120 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 671202200120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (800391002400).

671202200120 is an abundant number, since it is smaller than the sum of its proper divisors (929579804680).

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

671202200120 is a wasteful number, since it uses less digits than its factorization.

671202200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075008 (or 1075004 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 671202200120 its reverse (21002202176), we get a palindrome (692204402296).

The spelling of 671202200120 in words is "six hundred seventy-one billion, two hundred two million, two hundred thousand, one hundred twenty".