2661530515 has 16 divisors (see below), whose sum is σ = 3651104448. Its totient is φ = 1824546816.

The previous prime is 2661530483. The next prime is 2661530527. The reversal of 2661530515 is 5150351662.

It is a cyclic number.

It is not a de Polignac number, because 2661530515 - 2⁵ = 2661530483 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155419 + ... + 171691.

It is an arithmetic number, because the mean of its divisors is an integer number (228194028).

Almost surely, 2^2661530515 is an apocalyptic number.

2661530515 is a deficient number, since it is larger than the sum of its proper divisors (989573933).

2661530515 is a wasteful number, since it uses less digits than its factorization.

2661530515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20958.

The product of its (nonzero) digits is 27000, while the sum is 34.

The square root of 2661530515 is about 51590.0234056935. The cubic root of 2661530515 is about 1385.8316743318.

The spelling of 2661530515 in words is "two billion, six hundred sixty-one million, five hundred thirty thousand, five hundred fifteen".