6547782489 has 16 divisors (see below), whose sum is σ = 9223802880. Its totient is φ = 4120171920.

The previous prime is 6547782469. The next prime is 6547782541. The reversal of 6547782489 is 9842877456.

It is a happy number.

It is not a de Polignac number, because 6547782489 - 2⁵ = 6547782457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6547782469) 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 15 ways as a sum of consecutive naturals, for example, 196497 + ... + 227390.

It is an arithmetic number, because the mean of its divisors is an integer number (576487680).

Almost surely, 2^6547782489 is an apocalyptic number.

It is an amenable number.

6547782489 is a deficient number, since it is larger than the sum of its proper divisors (2676020391).

6547782489 is a wasteful number, since it uses less digits than its factorization.

6547782489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424180.

The product of its digits is 27095040, while the sum is 60.

The square root of 6547782489 is about 80918.3692927632. The cubic root of 6547782489 is about 1870.8174611429.

The spelling of 6547782489 in words is "six billion, five hundred forty-seven million, seven hundred eighty-two thousand, four hundred eighty-nine".