2168305621719 has 16 divisors (see below), whose sum is σ = 3008449276800. Its totient is φ = 1387989088416.

The previous prime is 2168305621697. The next prime is 2168305621723. The reversal of 2168305621719 is 9171265038612.

It is not a de Polignac number, because 2168305621719 - 2⁸ = 2168305621463 is a prime.

It is a super-2 number, since 2×2168305621719² (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 (2168305621219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142437904 + ... + 142453125.

It is an arithmetic number, because the mean of its divisors is an integer number (188028079800).

Almost surely, 2^{2168305621719} is an apocalyptic number.

2168305621719 is a deficient number, since it is larger than the sum of its proper divisors (840143655081).

2168305621719 is a wasteful number, since it uses less digits than its factorization.

2168305621719 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284891134.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 2168305621719 in words is "two trillion, one hundred sixty-eight billion, three hundred five million, six hundred twenty-one thousand, seven hundred nineteen".