123648590641 has 2 divisors, whose sum is σ = 123648590642. Its totient is φ = 123648590640.

The previous prime is 123648590629. The next prime is 123648590669. The reversal of 123648590641 is 146095846321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121856846400 + 1791744241 = 349080^2 + 42329^2 .

It is a cyclic number.

It is not a de Polignac number, because 123648590641 - 2⁹ = 123648590129 is a prime.

It is not a weakly prime, because it can be changed into another prime (123648590671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61824295320 + 61824295321.

It is an arithmetic number, because the mean of its divisors is an integer number (61824295321).

Almost surely, 2^123648590641 is an apocalyptic number.

It is an amenable number.

123648590641 is a deficient number, since it is larger than the sum of its proper divisors (1).

123648590641 is an equidigital number, since it uses as much as digits as its factorization.

123648590641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 123648590641 in words is "one hundred twenty-three billion, six hundred forty-eight million, five hundred ninety thousand, six hundred forty-one".