6513622672 has 20 divisors (see below), whose sum is σ = 12961230076. Its totient is φ = 3168789120.

The previous prime is 6513622663. The next prime is 6513622711. The reversal of 6513622672 is 2762263156.

It can be written as a sum of positive squares in 2 ways, for example, as 2201861776 + 4311760896 = 46924^2 + 65664^2 .

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 3 ways as a sum of consecutive naturals, for example, 5500779 + ... + 5501962.

Almost surely, 2^6513622672 is an apocalyptic number.

It is an amenable number.

6513622672 is a deficient number, since it is larger than the sum of its proper divisors (6447607404).

6513622672 is a wasteful number, since it uses less digits than its factorization.

6513622672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11002786 (or 11002780 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 6513622672 is about 80707.0174891874. The cubic root of 6513622672 is about 1867.5584321277.

The spelling of 6513622672 in words is "six billion, five hundred thirteen million, six hundred twenty-two thousand, six hundred seventy-two".