6416548321 has 4 divisors (see below), whose sum is σ = 6416747200. Its totient is φ = 6416349444.

The previous prime is 6416548319. The next prime is 6416548331. The reversal of 6416548321 is 1238456146.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6416548321 - 2¹ = 6416548319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6416548331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38661 + ... + 119698.

It is an arithmetic number, because the mean of its divisors is an integer number (1604186800).

Almost surely, 2^6416548321 is an apocalyptic number.

It is an amenable number.

6416548321 is a deficient number, since it is larger than the sum of its proper divisors (198879).

6416548321 is a wasteful number, since it uses less digits than its factorization.

6416548321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198878.

The product of its digits is 138240, while the sum is 40.

The square root of 6416548321 is about 80103.3602353859. The cubic root of 6416548321 is about 1858.2343749986.

The spelling of 6416548321 in words is "six billion, four hundred sixteen million, five hundred forty-eight thousand, three hundred twenty-one".