11111111061 has 12 divisors (see below), whose sum is σ = 15635581632. Its totient is φ = 7017543144.

The previous prime is 11111111059. The next prime is 11111111113. The reversal of 11111111061 is 16011111111.

It is not a de Polignac number, because 11111111061 - 2¹ = 11111111059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11111111061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111111761) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5128701 + ... + 5130866.

It is an arithmetic number, because the mean of its divisors is an integer number (1302965136).

Almost surely, 2^11111111061 is an apocalyptic number.

It is an amenable number.

11111111061 is a deficient number, since it is larger than the sum of its proper divisors (4524470571).

11111111061 is a wasteful number, since it uses less digits than its factorization.

11111111061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10259608 (or 10259589 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 15.

Adding to 11111111061 its reverse (16011111111), we get a palindrome (27122222172).

The spelling of 11111111061 in words is "eleven billion, one hundred eleven million, one hundred eleven thousand, sixty-one".