671225201802 has 24 divisors (see below), whose sum is σ = 1488142697184. Its totient is φ = 218538437544.

The previous prime is 671225201761. The next prime is 671225201807. The reversal of 671225201802 is 208102522176.

It is a happy number.

671225201802 is a `hidden beast` number, since 6 + 7 + 122 + 520 + 1 + 8 + 0 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (671225201807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 433607238 + ... + 433608785.

It is an arithmetic number, because the mean of its divisors is an integer number (62005945716).

Almost surely, 2^671225201802 is an apocalyptic number.

671225201802 is an abundant number, since it is smaller than the sum of its proper divisors (816917495382).

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

671225201802 is a wasteful number, since it uses less digits than its factorization.

671225201802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867216074 (or 867216071 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

Adding to 671225201802 its reverse (208102522176), we get a palindrome (879327723978).

The spelling of 671225201802 in words is "six hundred seventy-one billion, two hundred twenty-five million, two hundred one thousand, eight hundred two".