6465275651 has 4 divisors (see below), whose sum is σ = 6488121432. Its totient is φ = 6442429872.

The previous prime is 6465275647. The next prime is 6465275653. The reversal of 6465275651 is 1565725646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1565725646 = 2 ⋅782862823.

It is a cyclic number.

It is not a de Polignac number, because 6465275651 - 2² = 6465275647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6465275596 and 6465275605.

It is not an unprimeable number, because it can be changed into a prime (6465275653) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 11422466 + ... + 11423031.

It is an arithmetic number, because the mean of its divisors is an integer number (1622030358).

Almost surely, 2^6465275651 is an apocalyptic number.

6465275651 is a deficient number, since it is larger than the sum of its proper divisors (22845781).

6465275651 is a wasteful number, since it uses less digits than its factorization.

6465275651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22845780.

The product of its digits is 1512000, while the sum is 47.

The square root of 6465275651 is about 80406.9378287720. The cubic root of 6465275651 is about 1862.9263346414.

The spelling of 6465275651 in words is "six billion, four hundred sixty-five million, two hundred seventy-five thousand, six hundred fifty-one".