244544250421 has 2 divisors, whose sum is σ = 244544250422. Its totient is φ = 244544250420.

The previous prime is 244544250403. The next prime is 244544250427. The reversal of 244544250421 is 124052445442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223639139025 + 20905111396 = 472905^2 + 144586^2 .

It is a cyclic number.

It is not a de Polignac number, because 244544250421 - 2⁵ = 244544250389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244544250427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122272125210 + 122272125211.

It is an arithmetic number, because the mean of its divisors is an integer number (122272125211).

Almost surely, 2^244544250421 is an apocalyptic number.

It is an amenable number.

244544250421 is a deficient number, since it is larger than the sum of its proper divisors (1).

244544250421 is an equidigital number, since it uses as much as digits as its factorization.

244544250421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204800, while the sum is 37.

Adding to 244544250421 its reverse (124052445442), we get a palindrome (368596695863).

The spelling of 244544250421 in words is "two hundred forty-four billion, five hundred forty-four million, two hundred fifty thousand, four hundred twenty-one".