11505033345 has 32 divisors (see below), whose sum is σ = 20285096832. Its totient is φ = 5532291072.

The previous prime is 11505033313. The next prime is 11505033347. The reversal of 11505033345 is 54333050511.

It is not a de Polignac number, because 11505033345 - 2⁵ = 11505033313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11505033347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 677664 + ... + 694433.

It is an arithmetic number, because the mean of its divisors is an integer number (633909276).

Almost surely, 2^11505033345 is an apocalyptic number.

11505033345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11505033345 is a deficient number, since it is larger than the sum of its proper divisors (8780063487).

11505033345 is a wasteful number, since it uses less digits than its factorization.

11505033345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372161.

The product of its (nonzero) digits is 13500, while the sum is 30.

Adding to 11505033345 its reverse (54333050511), we get a palindrome (65838083856).

The spelling of 11505033345 in words is "eleven billion, five hundred five million, thirty-three thousand, three hundred forty-five".