6161812111 has 16 divisors (see below), whose sum is σ = 7619734528. Its totient is φ = 4852159200.

The previous prime is 6161812073. The next prime is 6161812159. The reversal of 6161812111 is 1112181616.

It is not a de Polignac number, because 6161812111 - 2²³ = 6153423503 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6161812111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6161812711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141255 + ... + 179656.

It is an arithmetic number, because the mean of its divisors is an integer number (476233408).

Almost surely, 2^6161812111 is an apocalyptic number.

6161812111 is a deficient number, since it is larger than the sum of its proper divisors (1457922417).

6161812111 is a wasteful number, since it uses less digits than its factorization.

6161812111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321142.

The product of its digits is 576, while the sum is 28.

The square root of 6161812111 is about 78497.2108485391. The cubic root of 6161812111 is about 1833.3110263475.

Adding to 6161812111 its reverse (1112181616), we get a palindrome (7273993727).

The spelling of 6161812111 in words is "six billion, one hundred sixty-one million, eight hundred twelve thousand, one hundred eleven".