11103400665 has 96 divisors (see below), whose sum is σ = 23488358400. Its totient is φ = 4742599680.

The previous prime is 11103400657. The next prime is 11103400687. The reversal of 11103400665 is 56600430111.

11103400665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11103400665 - 2³ = 11103400657 is a prime.

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 95 ways as a sum of consecutive naturals, for example, 263581 + ... + 302789.

It is an arithmetic number, because the mean of its divisors is an integer number (244670400).

Almost surely, 2^11103400665 is an apocalyptic number.

11103400665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11103400665 is an abundant number, since it is smaller than the sum of its proper divisors (12384957735).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11103400665 is a wasteful number, since it uses less digits than its factorization.

11103400665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39287 (or 39284 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 11103400665 its reverse (56600430111), we get a palindrome (67703830776).

The spelling of 11103400665 in words is "eleven billion, one hundred three million, four hundred thousand, six hundred sixty-five".