6866664444420 has 96 divisors (see below), whose sum is σ = 21170562610176. Its totient is φ = 1649088470400.

The previous prime is 6866664444403. The next prime is 6866664444421. The reversal of 6866664444420 is 244444666686.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (6866664444421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48546376 + ... + 48687615.

It is an arithmetic number, because the mean of its divisors is an integer number (220526693856).

Almost surely, 2^{6866664444420} is an apocalyptic number.

6866664444420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6866664444420 is an abundant number, since it is smaller than the sum of its proper divisors (14303898165756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6866664444420 is a wasteful number, since it uses less digits than its factorization.

6866664444420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97234121 (or 97234119 counting only the distinct ones).

The product of its (nonzero) digits is 127401984, while the sum is 60.

The spelling of 6866664444420 in words is "six trillion, eight hundred sixty-six billion, six hundred sixty-four million, four hundred forty-four thousand, four hundred twenty".