6685004434547 has 2 divisors, whose sum is σ = 6685004434548. Its totient is φ = 6685004434546.

The previous prime is 6685004434543. The next prime is 6685004434567. The reversal of 6685004434547 is 7454344005866.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6685004434547 - 2² = 6685004434543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6685004434492 and 6685004434501.

It is not a weakly prime, because it can be changed into another prime (6685004434543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3342502217273 + 3342502217274.

It is an arithmetic number, because the mean of its divisors is an integer number (3342502217274).

Almost surely, 2^{6685004434547} is an apocalyptic number.

6685004434547 is a deficient number, since it is larger than the sum of its proper divisors (1).

6685004434547 is an equidigital number, since it uses as much as digits as its factorization.

6685004434547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38707200, while the sum is 56.

The spelling of 6685004434547 in words is "six trillion, six hundred eighty-five billion, four million, four hundred thirty-four thousand, five hundred forty-seven".