6512861172 has 24 divisors (see below), whose sum is σ = 15198069600. Its totient is φ = 2170754656.

The previous prime is 6512861167. The next prime is 6512861189. The reversal of 6512861172 is 2711682156.

It is a self number, because there is not a number n which added to its sum of digits gives 6512861172.

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 7 ways as a sum of consecutive naturals, for example, 176854 + ... + 210482.

It is an arithmetic number, because the mean of its divisors is an integer number (633252900).

Almost surely, 2^6512861172 is an apocalyptic number.

It is an amenable number.

6512861172 is an abundant number, since it is smaller than the sum of its proper divisors (8685208428).

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

6512861172 is a wasteful number, since it uses less digits than its factorization.

6512861172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49775 (or 49773 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The square root of 6512861172 is about 80702.2996698359. The cubic root of 6512861172 is about 1867.4856512681.

The spelling of 6512861172 in words is "six billion, five hundred twelve million, eight hundred sixty-one thousand, one hundred seventy-two".