11105061051 has 12 divisors (see below), whose sum is σ = 17224176552. Its totient is φ = 6345749088.

The previous prime is 11105061049. The next prime is 11105061059. The reversal of 11105061051 is 15016050111.

It is a happy number.

It is not a de Polignac number, because 11105061051 - 2¹ = 11105061049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (11105061059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37772170 + ... + 37772463.

It is an arithmetic number, because the mean of its divisors is an integer number (1435348046).

Almost surely, 2^11105061051 is an apocalyptic number.

11105061051 is a deficient number, since it is larger than the sum of its proper divisors (6119115501).

11105061051 is an equidigital number, since it uses as much as digits as its factorization.

11105061051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75544650 (or 75544643 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 21.

The spelling of 11105061051 in words is "eleven billion, one hundred five million, sixty-one thousand, fifty-one".