11103661642 has 16 divisors (see below), whose sum is σ = 16887522240. Its totient is φ = 5474522592.

The previous prime is 11103661609. The next prime is 11103661661. The reversal of 11103661642 is 24616630111.

11103661642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1260409 + ... + 1269187.

It is an arithmetic number, because the mean of its divisors is an integer number (1055470140).

Almost surely, 2^11103661642 is an apocalyptic number.

11103661642 is a deficient number, since it is larger than the sum of its proper divisors (5783860598).

11103661642 is an equidigital number, since it uses as much as digits as its factorization.

11103661642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17517.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 11103661642 in words is "eleven billion, one hundred three million, six hundred sixty-one thousand, six hundred forty-two".