6646587901027 has 2 divisors, whose sum is σ = 6646587901028. Its totient is φ = 6646587901026.

The previous prime is 6646587900929. The next prime is 6646587901033. The reversal of 6646587901027 is 7201097856466.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6646587901027 - 2³⁹ = 6096832087139 is a prime.

It is not a weakly prime, because it can be changed into another prime (6646587901127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3323293950513 + 3323293950514.

It is an arithmetic number, because the mean of its divisors is an integer number (3323293950514).

Almost surely, 2^{6646587901027} is an apocalyptic number.

6646587901027 is a deficient number, since it is larger than the sum of its proper divisors (1).

6646587901027 is an equidigital number, since it uses as much as digits as its factorization.

6646587901027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 6646587901027 in words is "six trillion, six hundred forty-six billion, five hundred eighty-seven million, nine hundred one thousand, twenty-seven".