1065868197888 has 144 divisors (see below), whose sum is σ = 3060957828096. Its totient is φ = 327957872640.

The previous prime is 1065868197871. The next prime is 1065868197907. The reversal of 1065868197888 is 8887918685601.

It is a super-2 number, since 2×1065868197888² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5007553 + ... + 5216063.

It is an arithmetic number, because the mean of its divisors is an integer number (21256651584).

Almost surely, 2^{1065868197888} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1065868197888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1530478914048).

1065868197888 is an abundant number, since it is smaller than the sum of its proper divisors (1995089630208).

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

1065868197888 is an frugal number, since it uses more digits than its factorization.

1065868197888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208561 (or 208529 counting only the distinct ones).

The product of its (nonzero) digits is 371589120, while the sum is 75.

The spelling of 1065868197888 in words is "one trillion, sixty-five billion, eight hundred sixty-eight million, one hundred ninety-seven thousand, eight hundred eighty-eight".