6819601277609 has 2 divisors, whose sum is σ = 6819601277610. Its totient is φ = 6819601277608.

The previous prime is 6819601277561. The next prime is 6819601277651. The reversal of 6819601277609 is 9067721069186.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6419873860009 + 399727417600 = 2533747^2 + 632240^2 .

It is a cyclic number.

It is not a de Polignac number, because 6819601277609 - 2⁸ = 6819601277353 is a prime.

It is not a weakly prime, because it can be changed into another prime (6819601277009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3409800638804 + 3409800638805.

It is an arithmetic number, because the mean of its divisors is an integer number (3409800638805).

Almost surely, 2^{6819601277609} is an apocalyptic number.

It is an amenable number.

6819601277609 is a deficient number, since it is larger than the sum of its proper divisors (1).

6819601277609 is an equidigital number, since it uses as much as digits as its factorization.

6819601277609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13716864, while the sum is 62.

The spelling of 6819601277609 in words is "six trillion, eight hundred nineteen billion, six hundred one million, two hundred seventy-seven thousand, six hundred nine".