1616061061111 has 4 divisors (see below), whose sum is σ = 1846926926992. Its totient is φ = 1385195195232.

The previous prime is 1616061061057. The next prime is 1616061061127. The reversal of 1616061061111 is 1111601606161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1616061061111 - 2⁹ = 1616061060599 is a prime.

It is a super-2 number, since 2×1616061061111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616061061151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115432932930 + ... + 115432932943.

It is an arithmetic number, because the mean of its divisors is an integer number (461731731748).

Almost surely, 2^{1616061061111} is an apocalyptic number.

1616061061111 is a deficient number, since it is larger than the sum of its proper divisors (230865865881).

1616061061111 is an equidigital number, since it uses as much as digits as its factorization.

1616061061111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230865865880.

The product of its (nonzero) digits is 1296, while the sum is 31.

Adding to 1616061061111 its reverse (1111601606161), we get a palindrome (2727662667272).

The spelling of 1616061061111 in words is "one trillion, six hundred sixteen billion, sixty-one million, sixty-one thousand, one hundred eleven".