123144443641 has 2 divisors, whose sum is σ = 123144443642. Its totient is φ = 123144443640.

The previous prime is 123144443629. The next prime is 123144443647. The reversal of 123144443641 is 146344441321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123004518400 + 139925241 = 350720^2 + 11829^2 .

It is a cyclic number.

It is not a de Polignac number, because 123144443641 - 2²⁷ = 123010225913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123144443641.

It is not a weakly prime, because it can be changed into another prime (123144443647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61572221820 + 61572221821.

It is an arithmetic number, because the mean of its divisors is an integer number (61572221821).

Almost surely, 2^123144443641 is an apocalyptic number.

It is an amenable number.

123144443641 is a deficient number, since it is larger than the sum of its proper divisors (1).

123144443641 is an equidigital number, since it uses as much as digits as its factorization.

123144443641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 37.

Adding to 123144443641 its reverse (146344441321), we get a palindrome (269488884962).

The spelling of 123144443641 in words is "one hundred twenty-three billion, one hundred forty-four million, four hundred forty-three thousand, six hundred forty-one".