6685378560053 has 2 divisors, whose sum is σ = 6685378560054. Its totient is φ = 6685378560052.

The previous prime is 6685378559929. The next prime is 6685378560061. The reversal of 6685378560053 is 3500658735866.

6685378560053 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4148643859684 + 2536734700369 = 2036822^2 + 1592713^2 .

It is a cyclic number.

It is not a de Polignac number, because 6685378560053 - 2¹⁸ = 6685378297909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6685378560853) 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, 3342689280026 + 3342689280027.

It is an arithmetic number, because the mean of its divisors is an integer number (3342689280027).

Almost surely, 2^{6685378560053} is an apocalyptic number.

It is an amenable number.

6685378560053 is a deficient number, since it is larger than the sum of its proper divisors (1).

6685378560053 is an equidigital number, since it uses as much as digits as its factorization.

6685378560053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864000, while the sum is 62.

The spelling of 6685378560053 in words is "six trillion, six hundred eighty-five billion, three hundred seventy-eight million, five hundred sixty thousand, fifty-three".