6661130515 has 8 divisors (see below), whose sum is σ = 8608230288. Its totient is φ = 4918988640.

The previous prime is 6661130513. The next prime is 6661130537. The reversal of 6661130515 is 5150311666.

6661130515 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6661130515 - 2¹ = 6661130513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6661130513) 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 7 ways as a sum of consecutive naturals, for example, 51239401 + ... + 51239530.

It is an arithmetic number, because the mean of its divisors is an integer number (1076028786).

Almost surely, 2^6661130515 is an apocalyptic number.

6661130515 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6661130515 is a deficient number, since it is larger than the sum of its proper divisors (1947099773).

6661130515 is a wasteful number, since it uses less digits than its factorization.

6661130515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102478949.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 6661130515 is about 81615.7491848234. The cubic root of 6661130515 is about 1881.5509416686.

The spelling of 6661130515 in words is "six billion, six hundred sixty-one million, one hundred thirty thousand, five hundred fifteen".