671225201800 has 192 divisors, whose sum is σ = 1758925368000. Its totient is φ = 236704849920.

The previous prime is 671225201761. The next prime is 671225201807. The reversal of 671225201800 is 8102522176.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

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 47 ways as a sum of consecutive naturals, for example, 5691027 + ... + 5807773.

It is an arithmetic number, because the mean of its divisors is an integer number (9161069625).

Almost surely, 2^671225201800 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 671225201800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (879462684000).

671225201800 is an abundant number, since it is smaller than the sum of its proper divisors (1087700166200).

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

671225201800 is a wasteful number, since it uses less digits than its factorization.

671225201800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116888 (or 116879 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

Adding to 671225201800 its reverse (8102522176), we get a palindrome (679327723976).

The spelling of 671225201800 in words is "six hundred seventy-one billion, two hundred twenty-five million, two hundred one thousand, eight hundred".