1066111111156 has 96 divisors (see below), whose sum is σ = 2332392749568. Its totient is φ = 415166169600.

The previous prime is 1066111111127. The next prime is 1066111111187. The reversal of 1066111111156 is 6511111116601.

It is a super-2 number, since 2×1066111111156² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6276361 + ... + 6443983.

It is an arithmetic number, because the mean of its divisors is an integer number (24295757808).

Almost surely, 2^{1066111111156} 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 1066111111156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1166196374784).

1066111111156 is an abundant number, since it is smaller than the sum of its proper divisors (1266281638412).

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

1066111111156 is a wasteful number, since it uses less digits than its factorization.

1066111111156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167921 (or 167919 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 31.

Adding to 1066111111156 its reverse (6511111116601), we get a palindrome (7577222227757).

Subtracting 1066111111156 from its reverse (6511111116601), we obtain a palindrome (5445000005445).

It can be divided in two parts, 10 and 66111111156, that added together give a palindrome (66111111166).

The spelling of 1066111111156 in words is "one trillion, sixty-six billion, one hundred eleven million, one hundred eleven thousand, one hundred fifty-six".