1660061101611 has 16 divisors (see below), whose sum is σ = 2417432325120. Its totient is φ = 1004931805920.

The previous prime is 1660061101607. The next prime is 1660061101709. The reversal of 1660061101611 is 1161011600661.

It is not a de Polignac number, because 1660061101611 - 2² = 1660061101607 is a prime.

It is a super-2 number, since 2×1660061101611² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1660061101711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29116876 + ... + 29173833.

It is an arithmetic number, because the mean of its divisors is an integer number (151089520320).

Almost surely, 2^{1660061101611} is an apocalyptic number.

1660061101611 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1660061101611 is a deficient number, since it is larger than the sum of its proper divisors (757371223509).

1660061101611 is a wasteful number, since it uses less digits than its factorization.

1660061101611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58291586.

The product of its (nonzero) digits is 1296, while the sum is 30.

The spelling of 1660061101611 in words is "one trillion, six hundred sixty billion, sixty-one million, one hundred one thousand, six hundred eleven".