1668647400060 has 96 divisors (see below), whose sum is σ = 4809323377152. Its totient is φ = 431968792320.

The previous prime is 1668647400059. The next prime is 1668647400127. The reversal of 1668647400060 is 600047468661.

It is a junction number, because it is equal to n+sod(n) for n = 1668647399982 and 1668647400009.

It is a congruent number.

It is an unprimeable number.

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, 135105 + ... + 1831815.

It is an arithmetic number, because the mean of its divisors is an integer number (50097118512).

Almost surely, 2^{1668647400060} is an apocalyptic number.

1668647400060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1668647400060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2404661688576).

1668647400060 is an abundant number, since it is smaller than the sum of its proper divisors (3140675977092).

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

1668647400060 is a wasteful number, since it uses less digits than its factorization.

1668647400060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697203 (or 1697201 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 1668647400060 in words is "one trillion, six hundred sixty-eight billion, six hundred forty-seven million, four hundred thousand, sixty".