123544444747 has 2 divisors, whose sum is σ = 123544444748. Its totient is φ = 123544444746.

The previous prime is 123544444651. The next prime is 123544444769. The reversal of 123544444747 is 747444445321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123544444747 - 2¹¹ = 123544442699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123544444747.

It is not a weakly prime, because it can be changed into another prime (123544445747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61772222373 + 61772222374.

It is an arithmetic number, because the mean of its divisors is an integer number (61772222374).

Almost surely, 2^123544444747 is an apocalyptic number.

123544444747 is a deficient number, since it is larger than the sum of its proper divisors (1).

123544444747 is an equidigital number, since it uses as much as digits as its factorization.

123544444747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6021120, while the sum is 49.

The spelling of 123544444747 in words is "one hundred twenty-three billion, five hundred forty-four million, four hundred forty-four thousand, seven hundred forty-seven".