123548872589 has 2 divisors, whose sum is σ = 123548872590. Its totient is φ = 123548872588.

The previous prime is 123548872571. The next prime is 123548872633. The reversal of 123548872589 is 985278845321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123511479364 + 37393225 = 351442^2 + 6115^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123548872589 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123548872519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61774436294 + 61774436295.

It is an arithmetic number, because the mean of its divisors is an integer number (61774436295).

Almost surely, 2^123548872589 is an apocalyptic number.

It is an amenable number.

123548872589 is a deficient number, since it is larger than the sum of its proper divisors (1).

123548872589 is an equidigital number, since it uses as much as digits as its factorization.

123548872589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38707200, while the sum is 62.

The spelling of 123548872589 in words is "one hundred twenty-three billion, five hundred forty-eight million, eight hundred seventy-two thousand, five hundred eighty-nine".