244504221457 has 2 divisors, whose sum is σ = 244504221458. Its totient is φ = 244504221456.

The previous prime is 244504221433. The next prime is 244504221499. The reversal of 244504221457 is 754122405442.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193073238801 + 51430982656 = 439401^2 + 226784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-244504221457 is a prime.

It is not a weakly prime, because it can be changed into another prime (244504221407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122252110728 + 122252110729.

It is an arithmetic number, because the mean of its divisors is an integer number (122252110729).

Almost surely, 2^244504221457 is an apocalyptic number.

It is an amenable number.

244504221457 is a deficient number, since it is larger than the sum of its proper divisors (1).

244504221457 is an equidigital number, since it uses as much as digits as its factorization.

244504221457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 358400, while the sum is 40.

Adding to 244504221457 its reverse (754122405442), we get a palindrome (998626626899).

The spelling of 244504221457 in words is "two hundred forty-four billion, five hundred four million, two hundred twenty-one thousand, four hundred fifty-seven".