6621328231207 has 2 divisors, whose sum is σ = 6621328231208. Its totient is φ = 6621328231206.

The previous prime is 6621328231169. The next prime is 6621328231363. The reversal of 6621328231207 is 7021328231266.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6621328231207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6621328211207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3310664115603 + 3310664115604.

It is an arithmetic number, because the mean of its divisors is an integer number (3310664115604).

Almost surely, 2^{6621328231207} is an apocalyptic number.

6621328231207 is a deficient number, since it is larger than the sum of its proper divisors (1).

6621328231207 is an equidigital number, since it uses as much as digits as its factorization.

6621328231207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 6621328231207 in words is "six trillion, six hundred twenty-one billion, three hundred twenty-eight million, two hundred thirty-one thousand, two hundred seven".