1668350841767 has 16 divisors (see below), whose sum is σ = 1724605603392. Its totient is φ = 1612693877760.

The previous prime is 1668350841671. The next prime is 1668350841887. The reversal of 1668350841767 is 7671480538661.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1668350841767 - 2²⁰ = 1668349793191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668350844767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11874167 + ... + 12013847.

It is an arithmetic number, because the mean of its divisors is an integer number (107787850212).

Almost surely, 2^{1668350841767} is an apocalyptic number.

1668350841767 is a deficient number, since it is larger than the sum of its proper divisors (56254761625).

1668350841767 is a wasteful number, since it uses less digits than its factorization.

1668350841767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141818.

The product of its (nonzero) digits is 40642560, while the sum is 62.

The spelling of 1668350841767 in words is "one trillion, six hundred sixty-eight billion, three hundred fifty million, eight hundred forty-one thousand, seven hundred sixty-seven".