6547478399 has 8 divisors (see below), whose sum is σ = 8163090048. Its totient is φ = 5101931160.

The previous prime is 6547478383. The next prime is 6547478401. The reversal of 6547478399 is 9938747456.

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

It is a cyclic number.

It is not a de Polignac number, because 6547478399 - 2⁴ = 6547478383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6547478339) 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, 42516017 + ... + 42516170.

It is an arithmetic number, because the mean of its divisors is an integer number (1020386256).

Almost surely, 2^6547478399 is an apocalyptic number.

6547478399 is a deficient number, since it is larger than the sum of its proper divisors (1615611649).

6547478399 is a wasteful number, since it uses less digits than its factorization.

6547478399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85032205.

The product of its digits is 45722880, while the sum is 62.

The square root of 6547478399 is about 80916.4902785582. The cubic root of 6547478399 is about 1870.7884993944.

The spelling of 6547478399 in words is "six billion, five hundred forty-seven million, four hundred seventy-eight thousand, three hundred ninety-nine".