1668710449340 has 48 divisors (see below), whose sum is σ = 3822961000320. Its totient is φ = 606788393280.

The previous prime is 1668710449333. The next prime is 1668710449363. The reversal of 1668710449340 is 439440178661.

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 15 ways as a sum of consecutive naturals, for example, 12079499 + ... + 12216861.

It is an arithmetic number, because the mean of its divisors is an integer number (79645020840).

Almost surely, 2^{1668710449340} is an apocalyptic number.

1668710449340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1668710449340 is an abundant number, since it is smaller than the sum of its proper divisors (2154250550980).

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

1668710449340 is a wasteful number, since it uses less digits than its factorization.

1668710449340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192602 (or 192600 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 1668710449340 in words is "one trillion, six hundred sixty-eight billion, seven hundred ten million, four hundred forty-nine thousand, three hundred forty".