11050561161 has 20 divisors (see below), whose sum is σ = 16560745344. Its totient is φ = 7343335800.

The previous prime is 11050561147. The next prime is 11050561231. The reversal of 11050561161 is 16116505011.

It is not a de Polignac number, because 11050561161 - 2⁵ = 11050561129 is a prime.

It is a super-2 number, since 2×11050561161² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (11050560161) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 194145 + ... + 244526.

Almost surely, 2^11050561161 is an apocalyptic number.

It is an amenable number.

11050561161 is a deficient number, since it is larger than the sum of its proper divisors (5510184183).

11050561161 is an equidigital number, since it uses as much as digits as its factorization.

11050561161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438994 (or 438985 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 27.

The spelling of 11050561161 in words is "eleven billion, fifty million, five hundred sixty-one thousand, one hundred sixty-one".