6685665705755 has 16 divisors (see below), whose sum is σ = 8027040023904. Its totient is φ = 5345705756160.

The previous prime is 6685665705673. The next prime is 6685665705757. The reversal of 6685665705755 is 5575075665866.

It is not a de Polignac number, because 6685665705755 - 2¹⁶ = 6685665640219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6685665705757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94634345 + ... + 94704965.

It is an arithmetic number, because the mean of its divisors is an integer number (501690001494).

Almost surely, 2^{6685665705755} is an apocalyptic number.

6685665705755 is a deficient number, since it is larger than the sum of its proper divisors (1341374318149).

6685665705755 is a wasteful number, since it uses less digits than its factorization.

6685665705755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80366.

The product of its (nonzero) digits is 1587600000, while the sum is 71.

The spelling of 6685665705755 in words is "six trillion, six hundred eighty-five billion, six hundred sixty-five million, seven hundred five thousand, seven hundred fifty-five".