6656991119 has 8 divisors (see below), whose sum is σ = 6872696448. Its totient is φ = 6441346080.

The previous prime is 6656991113. The next prime is 6656991137. The reversal of 6656991119 is 9111996566.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6656991119 is a prime.

It is a super-2 number, since 2×6656991119² = 88631061516889744322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656991113) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 350249 + ... + 368765.

It is an arithmetic number, because the mean of its divisors is an integer number (859087056).

Almost surely, 2^6656991119 is an apocalyptic number.

6656991119 is a deficient number, since it is larger than the sum of its proper divisors (215705329).

6656991119 is a wasteful number, since it uses less digits than its factorization.

6656991119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30145.

The product of its digits is 787320, while the sum is 53.

The square root of 6656991119 is about 81590.3861922469. The cubic root of 6656991119 is about 1881.1611130300.

The spelling of 6656991119 in words is "six billion, six hundred fifty-six million, nine hundred ninety-one thousand, one hundred nineteen".