124563388681 has 2 divisors, whose sum is σ = 124563388682. Its totient is φ = 124563388680.

The previous prime is 124563388603. The next prime is 124563388709. The reversal of 124563388681 is 186883365421.

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., 124086403081 + 476985600 = 352259^2 + 21840^2 .

It is a cyclic number.

It is not a de Polignac number, because 124563388681 - 2³¹ = 122415905033 is a prime.

It is a super-2 number, since 2×124563388681² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (124563389681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62281694340 + 62281694341.

It is an arithmetic number, because the mean of its divisors is an integer number (62281694341).

Almost surely, 2^124563388681 is an apocalyptic number.

It is an amenable number.

124563388681 is a deficient number, since it is larger than the sum of its proper divisors (1).

124563388681 is an equidigital number, since it uses as much as digits as its factorization.

124563388681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6635520, while the sum is 55.

The spelling of 124563388681 in words is "one hundred twenty-four billion, five hundred sixty-three million, three hundred eighty-eight thousand, six hundred eighty-one".