6161111011 has 4 divisors (see below), whose sum is σ = 6721212024. Its totient is φ = 5601010000.

The previous prime is 6161110997. The next prime is 6161111051. The reversal of 6161111011 is 1101111616.

It is a happy number.

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 6161111011 - 2²³ = 6152722403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6161111011.

It is not an unprimeable number, because it can be changed into a prime (6161111051) 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, 280050490 + ... + 280050511.

It is an arithmetic number, because the mean of its divisors is an integer number (1680303006).

Almost surely, 2^6161111011 is an apocalyptic number.

6161111011 is a deficient number, since it is larger than the sum of its proper divisors (560101013).

6161111011 is a wasteful number, since it uses less digits than its factorization.

6161111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560101012.

The product of its (nonzero) digits is 36, while the sum is 19.

The square root of 6161111011 is about 78492.7449577348. The cubic root of 6161111011 is about 1833.2414914396.

Adding to 6161111011 its reverse (1101111616), we get a palindrome (7262222627).

The spelling of 6161111011 in words is "six billion, one hundred sixty-one million, one hundred eleven thousand, eleven".