6461251168 has 48 divisors (see below), whose sum is σ = 12850548480. Its totient is φ = 3197750400.

The previous prime is 6461251157. The next prime is 6461251219. The reversal of 6461251168 is 8611521646.

It is a self number, because there is not a number n which added to its sum of digits gives 6461251168.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1838533 + ... + 1842043.

It is an arithmetic number, because the mean of its divisors is an integer number (267719760).

Almost surely, 2^6461251168 is an apocalyptic number.

It is an amenable number.

6461251168 is a deficient number, since it is larger than the sum of its proper divisors (6389297312).

6461251168 is a wasteful number, since it uses less digits than its factorization.

6461251168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4091 (or 4083 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 6461251168 is about 80381.9082132292. The cubic root of 6461251168 is about 1862.5397117068.

The spelling of 6461251168 in words is "six billion, four hundred sixty-one million, two hundred fifty-one thousand, one hundred sixty-eight".