6549543153 has 6 divisors (see below), whose sum is σ = 9460451234. Its totient is φ = 4366362096.

The previous prime is 6549543149. The next prime is 6549543157. The reversal of 6549543153 is 3513459456.

6549543153 is a `hidden beast` number, since 6 + 5 + 495 + 4 + 3 + 153 = 666.

It is an interprime number because it is at equal distance from previous prime (6549543149) and next prime (6549543157).

It can be written as a sum of positive squares in only one way, i.e., 4862551824 + 1686991329 = 69732^2 + 41073^2 .

It is not a de Polignac number, because 6549543153 - 2² = 6549543149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6549543099 and 6549543108.

It is not an unprimeable number, because it can be changed into a prime (6549543157) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 363863500 + ... + 363863517.

Almost surely, 2^6549543153 is an apocalyptic number.

It is an amenable number.

6549543153 is a deficient number, since it is larger than the sum of its proper divisors (2910908081).

6549543153 is a wasteful number, since it uses less digits than its factorization.

6549543153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727727023 (or 727727020 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The square root of 6549543153 is about 80929.2478217857. The cubic root of 6549543153 is about 1870.9851304146.

The spelling of 6549543153 in words is "six billion, five hundred forty-nine million, five hundred forty-three thousand, one hundred fifty-three".