244505354135221 has 4 divisors (see below), whose sum is σ = 244507147792672. Its totient is φ = 244503560477772.

The previous prime is 244505354135183. The next prime is 244505354135239. The reversal of 244505354135221 is 122531453505442.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244505354135221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244505354135291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 896624235 + ... + 896896888.

It is an arithmetic number, because the mean of its divisors is an integer number (61126786948168).

Almost surely, 2^{244505354135221} is an apocalyptic number.

It is an amenable number.

244505354135221 is a deficient number, since it is larger than the sum of its proper divisors (1793657451).

244505354135221 is a wasteful number, since it uses less digits than its factorization.

244505354135221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793657450.

The product of its (nonzero) digits is 2880000, while the sum is 46.

The spelling of 244505354135221 in words is "two hundred forty-four trillion, five hundred five billion, three hundred fifty-four million, one hundred thirty-five thousand, two hundred twenty-one".