1065166111650 has 96 divisors (see below), whose sum is σ = 2745127872000. Its totient is φ = 273036556800.

The previous prime is 1065166111591. The next prime is 1065166111663. The reversal of 1065166111650 is 561116615601.

It is a super-2 number, since 2×1065166111650² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1065166111599 and 1065166111608.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75835 + ... + 1461534.

It is an arithmetic number, because the mean of its divisors is an integer number (28595082000).

Almost surely, 2^{1065166111650} is an apocalyptic number.

1065166111650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1065166111650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1372563936000).

1065166111650 is an abundant number, since it is smaller than the sum of its proper divisors (1679961760350).

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

1065166111650 is a wasteful number, since it uses less digits than its factorization.

1065166111650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537564 (or 1537559 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 1065166111650 in words is "one trillion, sixty-five billion, one hundred sixty-six million, one hundred eleven thousand, six hundred fifty".