6515515061 has 16 divisors (see below), whose sum is σ = 7182432000. Its totient is φ = 5861332800.

The previous prime is 6515515043. The next prime is 6515515079. The reversal of 6515515061 is 1605155156.

It is an interprime number because it is at equal distance from previous prime (6515515043) and next prime (6515515079).

It is a cyclic number.

It is not a de Polignac number, because 6515515061 - 2⁶ = 6515514997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6515515001) 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, 436835 + ... + 451503.

It is an arithmetic number, because the mean of its divisors is an integer number (448902000).

Almost surely, 2^6515515061 is an apocalyptic number.

It is an amenable number.

6515515061 is a deficient number, since it is larger than the sum of its proper divisors (666916939).

6515515061 is a wasteful number, since it uses less digits than its factorization.

6515515061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15100.

The product of its (nonzero) digits is 22500, while the sum is 35.

The square root of 6515515061 is about 80718.7404572197. The cubic root of 6515515061 is about 1867.7392738810.

The spelling of 6515515061 in words is "six billion, five hundred fifteen million, five hundred fifteen thousand, sixty-one".