6771154987 has 16 divisors (see below), whose sum is σ = 7071068160. Its totient is φ = 6475841568.

The previous prime is 6771154981. The next prime is 6771155011. The reversal of 6771154987 is 7894511776.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6771154987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6771154981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3339468 + ... + 3341494.

It is an arithmetic number, because the mean of its divisors is an integer number (441941760).

Almost surely, 2^6771154987 is an apocalyptic number.

6771154987 is a deficient number, since it is larger than the sum of its proper divisors (299913173).

6771154987 is a wasteful number, since it uses less digits than its factorization.

6771154987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3090.

The product of its digits is 2963520, while the sum is 55.

The square root of 6771154987 is about 82287.0280603207. The cubic root of 6771154987 is about 1891.8538575853.

The spelling of 6771154987 in words is "six billion, seven hundred seventy-one million, one hundred fifty-four thousand, nine hundred eighty-seven".