3366668666868 has 72 divisors (see below), whose sum is σ = 8509788554400. Its totient is φ = 1035475249536.

The previous prime is 3366668666863. The next prime is 3366668666909. The reversal of 3366668666868 is 8686668666633.

It is a super-2 number, since 2×3366668666868² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is a junction number, because it is equal to n+sod(n) for n = 3366668666793 and 3366668666802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3366668666863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4649298 + ... + 5324406.

It is an arithmetic number, because the mean of its divisors is an integer number (118191507700).

Almost surely, 2^{3366668666868} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3366668666868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4254894277200).

3366668666868 is an abundant number, since it is smaller than the sum of its proper divisors (5143119887532).

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

3366668666868 is a wasteful number, since it uses less digits than its factorization.

3366668666868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677601 (or 677586 counting only the distinct ones).

The product of its digits is 7739670528, while the sum is 78.

The spelling of 3366668666868 in words is "three trillion, three hundred sixty-six billion, six hundred sixty-eight million, six hundred sixty-six thousand, eight hundred sixty-eight".