6668109016512 has 28 divisors (see below), whose sum is σ = 17642705106696. Its totient is φ = 2222703005440.

The previous prime is 6668109016493. The next prime is 6668109016519. The reversal of 6668109016512 is 2156109018666.

It is a super-2 number, since 2×6668109016512² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668109016519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17364867039 + ... + 17364867422.

Almost surely, 2^{6668109016512} is an apocalyptic number.

It is an amenable number.

6668109016512 is an abundant number, since it is smaller than the sum of its proper divisors (10974596090184).

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

6668109016512 is a wasteful number, since it uses less digits than its factorization.

6668109016512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34729734476 (or 34729734466 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 51.

The spelling of 6668109016512 in words is "six trillion, six hundred sixty-eight billion, one hundred nine million, sixteen thousand, five hundred twelve".