12240622783945 has 8 divisors (see below), whose sum is σ = 14694082899336. Its totient is φ = 9788941188096.

The previous prime is 12240622783927. The next prime is 12240622783957. The reversal of 12240622783945 is 54938722604221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2257196745609 + 9983426038336 = 1502397^2 + 3159656^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12240622783945 - 2¹⁵ = 12240622751177 is a prime.

It is a super-2 number, since 2×12240622783945² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444614742 + ... + 444642271.

It is an arithmetic number, because the mean of its divisors is an integer number (1836760362417).

It is a 1-persistent number, because it is pandigital, but 2⋅12240622783945 = 24481245567890 is not.

Almost surely, 2^{12240622783945} is an apocalyptic number.

It is an amenable number.

12240622783945 is a deficient number, since it is larger than the sum of its proper divisors (2453460115391).

12240622783945 is an equidigital number, since it uses as much as digits as its factorization.

12240622783945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889259771.

The product of its (nonzero) digits is 11612160, while the sum is 55.

The spelling of 12240622783945 in words is "twelve trillion, two hundred forty billion, six hundred twenty-two million, seven hundred eighty-three thousand, nine hundred forty-five".