671200012 has 48 divisors (see below), whose sum is σ = 1422630720. Its totient is φ = 270950400.

The previous prime is 671199959. The next prime is 671200021. The reversal of 671200012 is 210002176.

It is a super-2 number, since 2×671200012² = 901018912217600288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23212 + ... + 43372.

It is an arithmetic number, because the mean of its divisors is an integer number (29638140).

Almost surely, 2^671200012 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 671200012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (711315360).

671200012 is an abundant number, since it is smaller than the sum of its proper divisors (751430708).

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

671200012 is a wasteful number, since it uses less digits than its factorization.

671200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20242 (or 20240 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 671200012 is about 25907.5280951310. The cubic root of 671200012 is about 875.5561142911.

Adding to 671200012 its reverse (210002176), we get a palindrome (881202188).

The spelling of 671200012 in words is "six hundred seventy-one million, two hundred thousand, twelve".