244120012505 has 4 divisors (see below), whose sum is σ = 292944015012. Its totient is φ = 195296010000.

The previous prime is 244120012489. The next prime is 244120012511. The reversal of 244120012505 is 505210021442.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60226558921 + 183893453584 = 245411^2 + 428828^2 .

It is not a de Polignac number, because 244120012505 - 2⁴ = 244120012489 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 (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24412001246 + ... + 24412001255.

It is an arithmetic number, because the mean of its divisors is an integer number (73236003753).

Almost surely, 2^244120012505 is an apocalyptic number.

It is an amenable number.

244120012505 is a deficient number, since it is larger than the sum of its proper divisors (48824002507).

244120012505 is an equidigital number, since it uses as much as digits as its factorization.

244120012505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48824002506.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 244120012505 its reverse (505210021442), we get a palindrome (749330033947).

The spelling of 244120012505 in words is "two hundred forty-four billion, one hundred twenty million, twelve thousand, five hundred five".