6546371421 has 8 divisors (see below), whose sum is σ = 8792207424. Its totient is φ = 4332391520.

The previous prime is 6546371333. The next prime is 6546371423. The reversal of 6546371421 is 1241736456.

It is a happy number.

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 6546371421 - 2¹⁵ = 6546338653 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6546371421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6546371423) 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 7 ways as a sum of consecutive naturals, for example, 7963545 + ... + 7964366.

It is an arithmetic number, because the mean of its divisors is an integer number (1099025928).

Almost surely, 2^6546371421 is an apocalyptic number.

It is an amenable number.

6546371421 is a deficient number, since it is larger than the sum of its proper divisors (2245836003).

6546371421 is a wasteful number, since it uses less digits than its factorization.

6546371421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15928051.

The product of its digits is 120960, while the sum is 39.

The square root of 6546371421 is about 80909.6497396942. The cubic root of 6546371421 is about 1870.6830624457.

The spelling of 6546371421 in words is "six billion, five hundred forty-six million, three hundred seventy-one thousand, four hundred twenty-one".