6515275065 has 16 divisors (see below), whose sum is σ = 11226320448. Its totient is φ = 3207519936.

The previous prime is 6515275061. The next prime is 6515275073. The reversal of 6515275065 is 5605725156.

It is a happy number.

It is not a de Polignac number, because 6515275065 - 2² = 6515275061 is a prime.

It is a super-2 number, since 2×6515275065² = 84897618345221508450, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6515275061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16705639 + ... + 16706028.

It is an arithmetic number, because the mean of its divisors is an integer number (701645028).

Almost surely, 2^6515275065 is an apocalyptic number.

6515275065 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6515275065 is a deficient number, since it is larger than the sum of its proper divisors (4711045383).

6515275065 is a wasteful number, since it uses less digits than its factorization.

6515275065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33411688.

The product of its (nonzero) digits is 315000, while the sum is 42.

The square root of 6515275065 is about 80717.2538246935. The cubic root of 6515275065 is about 1867.7163411604.

The spelling of 6515275065 in words is "six billion, five hundred fifteen million, two hundred seventy-five thousand, sixty-five".