6473651421 has 16 divisors (see below), whose sum is σ = 8799709184. Its totient is φ = 4232259504.

The previous prime is 6473651407. The next prime is 6473651423. The reversal of 6473651421 is 1241563746.

It is a happy number.

It is not a de Polignac number, because 6473651421 - 2¹¹ = 6473649373 is a prime.

It is a Duffinian number.

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 6473651421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6473651423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27391 + ... + 117036.

It is an arithmetic number, because the mean of its divisors is an integer number (549981824).

Almost surely, 2^6473651421 is an apocalyptic number.

It is an amenable number.

6473651421 is a deficient number, since it is larger than the sum of its proper divisors (2326057763).

6473651421 is a wasteful number, since it uses less digits than its factorization.

6473651421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144720.

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

The square root of 6473651421 is about 80459.0045986153. The cubic root of 6473651421 is about 1863.7304616992.

The spelling of 6473651421 in words is "six billion, four hundred seventy-three million, six hundred fifty-one thousand, four hundred twenty-one".