244155245309 has 2 divisors, whose sum is σ = 244155245310. Its totient is φ = 244155245308.

The previous prime is 244155245287. The next prime is 244155245359. The reversal of 244155245309 is 903542551442.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163341264025 + 80813981284 = 404155^2 + 284278^2 .

It is a cyclic number.

It is not a de Polignac number, because 244155245309 - 2²⁰ = 244154196733 is a prime.

It is a super-2 number, since 2×244155245309² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 244155245309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (244155245359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122077622654 + 122077622655.

It is an arithmetic number, because the mean of its divisors is an integer number (122077622655).

Almost surely, 2^244155245309 is an apocalyptic number.

It is an amenable number.

244155245309 is a deficient number, since it is larger than the sum of its proper divisors (1).

244155245309 is an equidigital number, since it uses as much as digits as its factorization.

244155245309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 244155245309 in words is "two hundred forty-four billion, one hundred fifty-five million, two hundred forty-five thousand, three hundred nine".