6501271012 has 6 divisors (see below), whose sum is σ = 11377224278. Its totient is φ = 3250635504.

The previous prime is 6501271009. The next prime is 6501271027. The reversal of 6501271012 is 2101721056.

It can be written as a sum of positive squares in only one way, i.e., 4035552676 + 2465718336 = 63526^2 + 49656^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 812658873 + ... + 812658880.

Almost surely, 2^6501271012 is an apocalyptic number.

It is an amenable number.

6501271012 is a deficient number, since it is larger than the sum of its proper divisors (4875953266).

6501271012 is a wasteful number, since it uses less digits than its factorization.

6501271012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625317757 (or 1625317755 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 6501271012 is about 80630.4595794914. The cubic root of 6501271012 is about 1866.3772132108.

Adding to 6501271012 its reverse (2101721056), we get a palindrome (8602992068).

The spelling of 6501271012 in words is "six billion, five hundred one million, two hundred seventy-one thousand, twelve".