11050561000051 has 4 divisors (see below), whose sum is σ = 11700594000072. Its totient is φ = 10400528000032.

The previous prime is 11050561000033. The next prime is 11050561000067. The reversal of 11050561000051 is 15000016505011.

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 11050561000051 - 2³³ = 11041971065459 is a prime.

It is a super-2 number, since 2×11050561000051² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11050561000021) 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, 325016499985 + ... + 325016500018.

It is an arithmetic number, because the mean of its divisors is an integer number (2925148500018).

Almost surely, 2^{11050561000051} is an apocalyptic number.

11050561000051 is a deficient number, since it is larger than the sum of its proper divisors (650033000021).

11050561000051 is an equidigital number, since it uses as much as digits as its factorization.

11050561000051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650033000020.

The product of its (nonzero) digits is 750, while the sum is 25.

Adding to 11050561000051 its reverse (15000016505011), we get a palindrome (26050577505062).

The spelling of 11050561000051 in words is "eleven trillion, fifty billion, five hundred sixty-one million, fifty-one", and thus it is an aban number.