6481474421 has 2 divisors, whose sum is σ = 6481474422. Its totient is φ = 6481474420.

The previous prime is 6481474403. The next prime is 6481474457. The reversal of 6481474421 is 1244741846.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6477996196 + 3478225 = 80486^2 + 1865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6481474421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6481474481) 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 as a sum of consecutive naturals, namely, 3240737210 + 3240737211.

It is an arithmetic number, because the mean of its divisors is an integer number (3240737211).

Almost surely, 2^6481474421 is an apocalyptic number.

It is an amenable number.

6481474421 is a deficient number, since it is larger than the sum of its proper divisors (1).

6481474421 is an equidigital number, since it uses as much as digits as its factorization.

6481474421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172032, while the sum is 41.

The square root of 6481474421 is about 80507.6047401735. The cubic root of 6481474421 is about 1864.4808931226.

The spelling of 6481474421 in words is "six billion, four hundred eighty-one million, four hundred seventy-four thousand, four hundred twenty-one".