11505243345 has 32 divisors (see below), whose sum is σ = 18544038912. Its totient is φ = 6091008192.

The previous prime is 11505243313. The next prime is 11505243353. The reversal of 11505243345 is 54334250511.

It is not a de Polignac number, because 11505243345 - 2⁵ = 11505243313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2401042 + ... + 2405828.

It is an arithmetic number, because the mean of its divisors is an integer number (579501216).

Almost surely, 2^11505243345 is an apocalyptic number.

11505243345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11505243345 is a deficient number, since it is larger than the sum of its proper divisors (7038795567).

11505243345 is a wasteful number, since it uses less digits than its factorization.

11505243345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5941.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 11505243345 its reverse (54334250511), we get a palindrome (65839493856).

The spelling of 11505243345 in words is "eleven billion, five hundred five million, two hundred forty-three thousand, three hundred forty-five".