668045105616 has 60 divisors (see below), whose sum is σ = 2007543717312. Its totient is φ = 190870029504.

The previous prime is 668045105599. The next prime is 668045105617. The reversal of 668045105616 is 616501540866.

668045105616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (668045105617) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142014040 + ... + 142018743.

Almost surely, 2^668045105616 is an apocalyptic number.

It is an amenable number.

668045105616 is an abundant number, since it is smaller than the sum of its proper divisors (1339498611696).

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

668045105616 is a wasteful number, since it uses less digits than its factorization.

668045105616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284032808 (or 284032795 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 668045105616 in words is "six hundred sixty-eight billion, forty-five million, one hundred five thousand, six hundred sixteen".