244440320381 has 2 divisors, whose sum is σ = 244440320382. Its totient is φ = 244440320380.

The previous prime is 244440320357. The next prime is 244440320413. The reversal of 244440320381 is 183023044442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201304768900 + 43135551481 = 448670^2 + 207691^2 .

It is a cyclic number.

It is not a de Polignac number, because 244440320381 - 2³⁰ = 243366578557 is a prime.

It is a super-2 number, since 2×244440320381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244440320281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122220160190 + 122220160191.

It is an arithmetic number, because the mean of its divisors is an integer number (122220160191).

Almost surely, 2^244440320381 is an apocalyptic number.

It is an amenable number.

244440320381 is a deficient number, since it is larger than the sum of its proper divisors (1).

244440320381 is an equidigital number, since it uses as much as digits as its factorization.

244440320381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 35.

The spelling of 244440320381 in words is "two hundred forty-four billion, four hundred forty million, three hundred twenty thousand, three hundred eighty-one".