6512661153 has 12 divisors (see below), whose sum is σ = 9661425748. Its totient is φ = 4224428640.

The previous prime is 6512661137. The next prime is 6512661187. The reversal of 6512661153 is 3511662156.

It can be written as a sum of positive squares in 2 ways, for example, as 4449957264 + 2062703889 = 66708^2 + 45417^2 .

It is not a de Polignac number, because 6512661153 - 2⁴ = 6512661137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6512661653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9778438 + ... + 9779103.

Almost surely, 2^6512661153 is an apocalyptic number.

It is an amenable number.

6512661153 is a deficient number, since it is larger than the sum of its proper divisors (3148764595).

6512661153 is a wasteful number, since it uses less digits than its factorization.

6512661153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19557584 (or 19557581 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 6512661153 is about 80701.0604205422. The cubic root of 6512661153 is about 1867.4665333809.

The spelling of 6512661153 in words is "six billion, five hundred twelve million, six hundred sixty-one thousand, one hundred fifty-three".