11051661051 has 12 divisors (see below), whose sum is σ = 16234079160. Its totient is φ = 7242896160.

The previous prime is 11051661043. The next prime is 11051661109. The reversal of 11051661051 is 15016615011.

It is not a de Polignac number, because 11051661051 - 2³ = 11051661043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11051661001) 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, 10405930 + ... + 10406991.

It is an arithmetic number, because the mean of its divisors is an integer number (1352839930).

Almost surely, 2^11051661051 is an apocalyptic number.

11051661051 is a deficient number, since it is larger than the sum of its proper divisors (5182418109).

11051661051 is a wasteful number, since it uses less digits than its factorization.

11051661051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20812986 (or 20812983 counting only the distinct ones).

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

The spelling of 11051661051 in words is "eleven billion, fifty-one million, six hundred sixty-one thousand, fifty-one".