124143544661 has 2 divisors, whose sum is σ = 124143544662. Its totient is φ = 124143544660.

The previous prime is 124143544639. The next prime is 124143544703. The reversal of 124143544661 is 166445341421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102836303761 + 21307240900 = 320681^2 + 145970^2 .

It is a cyclic number.

It is not a de Polignac number, because 124143544661 - 2³⁰ = 123069802837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124143544621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62071772330 + 62071772331.

It is an arithmetic number, because the mean of its divisors is an integer number (62071772331).

Almost surely, 2^124143544661 is an apocalyptic number.

It is an amenable number.

124143544661 is a deficient number, since it is larger than the sum of its proper divisors (1).

124143544661 is an equidigital number, since it uses as much as digits as its factorization.

124143544661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 276480, while the sum is 41.

The spelling of 124143544661 in words is "one hundred twenty-four billion, one hundred forty-three million, five hundred forty-four thousand, six hundred sixty-one".