2168588397066 has 128 divisors (see below), whose sum is σ = 5494251603456. Its totient is φ = 555268193280.

The previous prime is 2168588397049. The next prime is 2168588397167. The reversal of 2168588397066 is 6607938858612.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9196696 + ... + 9429548.

It is an arithmetic number, because the mean of its divisors is an integer number (42923840652).

Almost surely, 2^{2168588397066} is an apocalyptic number.

2168588397066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2168588397066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2747125801728).

2168588397066 is an abundant number, since it is smaller than the sum of its proper divisors (3325663206390).

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

2168588397066 is a wasteful number, since it uses less digits than its factorization.

2168588397066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233376.

The product of its (nonzero) digits is 209018880, while the sum is 69.

The spelling of 2168588397066 in words is "two trillion, one hundred sixty-eight billion, five hundred eighty-eight million, three hundred ninety-seven thousand, sixty-six".