124115545549 has 2 divisors, whose sum is σ = 124115545550. Its totient is φ = 124115545548.

The previous prime is 124115545523. The next prime is 124115545559. The reversal of 124115545549 is 945545511421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89337025449 + 34778520100 = 298893^2 + 186490^2 .

It is a cyclic number.

It is not a de Polignac number, because 124115545549 - 2²¹ = 124113448397 is a prime.

It is a super-2 number, since 2×124115545549² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 124115545499 and 124115545508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124115545559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62057772774 + 62057772775.

It is an arithmetic number, because the mean of its divisors is an integer number (62057772775).

Almost surely, 2^124115545549 is an apocalyptic number.

It is an amenable number.

124115545549 is a deficient number, since it is larger than the sum of its proper divisors (1).

124115545549 is an equidigital number, since it uses as much as digits as its factorization.

124115545549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720000, while the sum is 46.

The spelling of 124115545549 in words is "one hundred twenty-four billion, one hundred fifteen million, five hundred forty-five thousand, five hundred forty-nine".