1668755711701 has 8 divisors (see below), whose sum is σ = 1797889897440. Its totient is φ = 1539731291952.

The previous prime is 1668755711699. The next prime is 1668755711783. The reversal of 1668755711701 is 1071175578661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1668755711701 - 2¹ = 1668755711699 is a prime.

It is a super-2 number, since 2×1668755711701² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668755711801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27409915 + ... + 27470728.

It is an arithmetic number, because the mean of its divisors is an integer number (224736237180).

Almost surely, 2^{1668755711701} is an apocalyptic number.

It is an amenable number.

1668755711701 is a deficient number, since it is larger than the sum of its proper divisors (129134185739).

1668755711701 is a wasteful number, since it uses less digits than its factorization.

1668755711701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54882995.

The product of its (nonzero) digits is 2469600, while the sum is 55.

The spelling of 1668755711701 in words is "one trillion, six hundred sixty-eight billion, seven hundred fifty-five million, seven hundred eleven thousand, seven hundred one".