1768168856887 has 4 divisors (see below), whose sum is σ = 1771110902176. Its totient is φ = 1765226811600.

The previous prime is 1768168856819. The next prime is 1768168856899. The reversal of 1768168856887 is 7886588618671.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1768168856887 - 2²³ = 1768160468279 is a prime.

It is a super-2 number, since 2×1768168856887² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1768168856807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1471021743 + ... + 1471022944.

It is an arithmetic number, because the mean of its divisors is an integer number (442777725544).

Almost surely, 2^{1768168856887} is an apocalyptic number.

1768168856887 is a deficient number, since it is larger than the sum of its proper divisors (2942045289).

1768168856887 is an equidigital number, since it uses as much as digits as its factorization.

1768168856887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942045288.

The product of its digits is 1734082560, while the sum is 79.

The spelling of 1768168856887 in words is "one trillion, seven hundred sixty-eight billion, one hundred sixty-eight million, eight hundred fifty-six thousand, eight hundred eighty-seven".