6615459459 has 24 divisors (see below), whose sum is σ = 11325233920. Its totient is φ = 3780261576.

The previous prime is 6615459449. The next prime is 6615459491. The reversal of 6615459459 is 9549545166.

6615459459 is a `hidden beast` number, since 6 + 6 + 1 + 545 + 94 + 5 + 9 = 666.

It is not a de Polignac number, because 6615459459 - 2⁴ = 6615459443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6615459419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1942879 + ... + 1946280.

Almost surely, 2^6615459459 is an apocalyptic number.

6615459459 is a deficient number, since it is larger than the sum of its proper divisors (4709774461).

6615459459 is an equidigital number, since it uses as much as digits as its factorization.

6615459459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3889181 (or 3889169 counting only the distinct ones).

The product of its digits is 5832000, while the sum is 54.

The square root of 6615459459 is about 81335.4747880653. The cubic root of 6615459459 is about 1877.2408842865.

The spelling of 6615459459 in words is "six billion, six hundred fifteen million, four hundred fifty-nine thousand, four hundred fifty-nine".