6555766191 has 8 divisors (see below), whose sum is σ = 9413407920. Its totient is φ = 4034317632.

The previous prime is 6555766181. The next prime is 6555766193. The reversal of 6555766191 is 1916675556.

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

It is not a de Polignac number, because 6555766191 - 2⁶ = 6555766127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6555766193) 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, 84048246 + ... + 84048323.

It is an arithmetic number, because the mean of its divisors is an integer number (1176675990).

Almost surely, 2^6555766191 is an apocalyptic number.

6555766191 is a deficient number, since it is larger than the sum of its proper divisors (2857641729).

6555766191 is a wasteful number, since it uses less digits than its factorization.

6555766191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168096585.

The product of its digits is 1701000, while the sum is 51.

The square root of 6555766191 is about 80967.6860914279. The cubic root of 6555766191 is about 1871.5775140178.

The spelling of 6555766191 in words is "six billion, five hundred fifty-five million, seven hundred sixty-six thousand, one hundred ninety-one".