12122514783405 has 64 divisors (see below), whose sum is σ = 23291512151040. Its totient is φ = 5946768576000.

The previous prime is 12122514783403. The next prime is 12122514783481. The reversal of 12122514783405 is 50438741522121.

It is a happy number.

12122514783405 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 25 + 147 + 83 + 405 = 666.

It is not a de Polignac number, because 12122514783405 - 2¹ = 12122514783403 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122514783403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11797621 + ... + 12783930.

It is an arithmetic number, because the mean of its divisors is an integer number (363929877360).

Almost surely, 2^{12122514783405} is an apocalyptic number.

12122514783405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12122514783405 is a deficient number, since it is larger than the sum of its proper divisors (11168997367635).

12122514783405 is a wasteful number, since it uses less digits than its factorization.

12122514783405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24581859 (or 24581853 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 12122514783405 in words is "twelve trillion, one hundred twenty-two billion, five hundred fourteen million, seven hundred eighty-three thousand, four hundred five".