12340061905 has 8 divisors (see below), whose sum is σ = 14810294952. Its totient is φ = 9870569088.

The previous prime is 12340061849. The next prime is 12340061941. The reversal of 12340061905 is 50916004321.

It can be written as a sum of positive squares in 4 ways, for example, as 1952579344 + 10387482561 = 44188^2 + 101919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12340061905 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 147694 + ... + 215623.

It is an arithmetic number, because the mean of its divisors is an integer number (1851286869).

Almost surely, 2^12340061905 is an apocalyptic number.

It is an amenable number.

12340061905 is a deficient number, since it is larger than the sum of its proper divisors (2470233047).

12340061905 is an equidigital number, since it uses as much as digits as its factorization.

12340061905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370115.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 12340061905 in words is "twelve billion, three hundred forty million, sixty-one thousand, nine hundred five".