6555201021671 has 2 divisors, whose sum is σ = 6555201021672. Its totient is φ = 6555201021670.

The previous prime is 6555201021667. The next prime is 6555201021793. The reversal of 6555201021671 is 1761201025556.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6555201021671 - 2² = 6555201021667 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6555201021371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3277600510835 + 3277600510836.

It is an arithmetic number, because the mean of its divisors is an integer number (3277600510836).

Almost surely, 2^{6555201021671} is an apocalyptic number.

6555201021671 is a deficient number, since it is larger than the sum of its proper divisors (1).

6555201021671 is an equidigital number, since it uses as much as digits as its factorization.

6555201021671 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 41.

The spelling of 6555201021671 in words is "six trillion, five hundred fifty-five billion, two hundred one million, twenty-one thousand, six hundred seventy-one".