124403209678889 has 2 divisors, whose sum is σ = 124403209678890. Its totient is φ = 124403209678888.

The previous prime is 124403209678873. The next prime is 124403209678961. The reversal of 124403209678889 is 988876902304421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124400227645225 + 2982033664 = 11153485^2 + 54608^2 .

It is a cyclic number.

It is not a de Polignac number, because 124403209678889 - 2⁴ = 124403209678873 is a prime.

It is not a weakly prime, because it can be changed into another prime (124403209678589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62201604839444 + 62201604839445.

It is an arithmetic number, because the mean of its divisors is an integer number (62201604839445).

Almost surely, 2^{124403209678889} is an apocalyptic number.

It is an amenable number.

124403209678889 is a deficient number, since it is larger than the sum of its proper divisors (1).

124403209678889 is an equidigital number, since it uses as much as digits as its factorization.

124403209678889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 334430208, while the sum is 71.

The spelling of 124403209678889 in words is "one hundred twenty-four trillion, four hundred three billion, two hundred nine million, six hundred seventy-eight thousand, eight hundred eighty-nine".