1668518626848 has 48 divisors (see below), whose sum is σ = 4381701500736. Its totient is φ = 555939211520.

The previous prime is 1668518626843. The next prime is 1668518626849. The reversal of 1668518626848 is 8486268158661.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1668518626843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3421236 + ... + 3878387.

It is an arithmetic number, because the mean of its divisors is an integer number (91285447932).

Almost surely, 2^{1668518626848} is an apocalyptic number.

It is an amenable number.

1668518626848 is an abundant number, since it is smaller than the sum of its proper divisors (2713182873888).

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

1668518626848 is a wasteful number, since it uses less digits than its factorization.

1668518626848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7302017 (or 7302009 counting only the distinct ones).

The product of its digits is 212336640, while the sum is 69.

The spelling of 1668518626848 in words is "one trillion, six hundred sixty-eight billion, five hundred eighteen million, six hundred twenty-six thousand, eight hundred forty-eight".