6450661312 has 14 divisors (see below), whose sum is σ = 12800531168. Its totient is φ = 3225330624.

The previous prime is 6450661307. The next prime is 6450661331. The reversal of 6450661312 is 2131660546.

It is a super-4 number, since 4×6450661312⁴ (a number of 40 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50395728 + ... + 50395855.

Almost surely, 2^6450661312 is an apocalyptic number.

It is an amenable number.

6450661312 is a deficient number, since it is larger than the sum of its proper divisors (6349869856).

6450661312 is a wasteful number, since it uses less digits than its factorization.

6450661312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100791595 (or 100791585 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 6450661312 is about 80316.0090641959. The cubic root of 6450661312 is about 1861.5216006935.

The spelling of 6450661312 in words is "six billion, four hundred fifty million, six hundred sixty-one thousand, three hundred twelve".