6471027467921 has 2 divisors, whose sum is σ = 6471027467922. Its totient is φ = 6471027467920.

The previous prime is 6471027467909. The next prime is 6471027467929. The reversal of 6471027467921 is 1297647201746.

6471027467921 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3714311835025 + 2756715632896 = 1927255^2 + 1660336^2 .

It is a cyclic number.

It is not a de Polignac number, because 6471027467921 - 2¹⁸ = 6471027205777 is a prime.

It is not a weakly prime, because it can be changed into another prime (6471027467929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3235513733960 + 3235513733961.

It is an arithmetic number, because the mean of its divisors is an integer number (3235513733961).

Almost surely, 2^{6471027467921} is an apocalyptic number.

It is an amenable number.

6471027467921 is a deficient number, since it is larger than the sum of its proper divisors (1).

6471027467921 is an equidigital number, since it uses as much as digits as its factorization.

6471027467921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7112448, while the sum is 56.

The spelling of 6471027467921 in words is "six trillion, four hundred seventy-one billion, twenty-seven million, four hundred sixty-seven thousand, nine hundred twenty-one".