11111050061 has 8 divisors (see below), whose sum is σ = 11383726200. Its totient is φ = 10838453760.

The previous prime is 11111050057. The next prime is 11111050081. The reversal of 11111050061 is 16005011111.

It can be written as a sum of positive squares in 4 ways, for example, as 105781225 + 11005268836 = 10285^2 + 104906^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11111050061 - 2² = 11111050057 is a prime.

It is a Duffinian number.

11111050061 is a modest number, since divided by 50061 gives 11111 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111050081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340655 + ... + 371843.

It is an arithmetic number, because the mean of its divisors is an integer number (1422965775).

Almost surely, 2^11111050061 is an apocalyptic number.

It is an amenable number.

11111050061 is a deficient number, since it is larger than the sum of its proper divisors (272676139).

11111050061 is an equidigital number, since it uses as much as digits as its factorization.

11111050061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39919.

The product of its (nonzero) digits is 30, while the sum is 17.

Adding to 11111050061 its reverse (16005011111), we get a palindrome (27116061172).

The spelling of 11111050061 in words is "eleven billion, one hundred eleven million, fifty thousand, sixty-one".