6661509119 has 8 divisors (see below), whose sum is σ = 7077466560. Its totient is φ = 6257968416.

The previous prime is 6661509091. The next prime is 6661509137. The reversal of 6661509119 is 9119051666.

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

It is a cyclic number.

It is not a de Polignac number, because 6661509119 - 2¹² = 6661505023 is a prime.

It is a super-2 number, since 2×6661509119² = 88751407485040312322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6661509119.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6661509149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3103079 + ... + 3105224.

It is an arithmetic number, because the mean of its divisors is an integer number (884683320).

Almost surely, 2^6661509119 is an apocalyptic number.

6661509119 is a deficient number, since it is larger than the sum of its proper divisors (415957441).

6661509119 is a wasteful number, since it uses less digits than its factorization.

6661509119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6208369.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 6661509119 is about 81618.0685816566. The cubic root of 6661509119 is about 1881.5865887315.

The spelling of 6661509119 in words is "six billion, six hundred sixty-one million, five hundred nine thousand, one hundred nineteen".