12331505205 has 56 divisors (see below), whose sum is σ = 22211159040. Its totient is φ = 6569514720.

The previous prime is 12331505161. The next prime is 12331505227. The reversal of 12331505205 is 50250513321.

It is a happy number.

12331505205 is a `hidden beast` number, since 123 + 3 + 15 + 0 + 520 + 5 = 666.

It is not a de Polignac number, because 12331505205 - 2¹¹ = 12331503157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 55 ways as a sum of consecutive naturals, for example, 5506476 + ... + 5508714.

It is an arithmetic number, because the mean of its divisors is an integer number (396627840).

Almost surely, 2^12331505205 is an apocalyptic number.

12331505205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12331505205 is a deficient number, since it is larger than the sum of its proper divisors (9879653835).

12331505205 is an equidigital number, since it uses as much as digits as its factorization.

12331505205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3773 (or 3758 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The spelling of 12331505205 in words is "twelve billion, three hundred thirty-one million, five hundred five thousand, two hundred five".