123782941589 has 2 divisors, whose sum is σ = 123782941590. Its totient is φ = 123782941588.

The previous prime is 123782941561. The next prime is 123782941643. The reversal of 123782941589 is 985149287321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71520409489 + 52262532100 = 267433^2 + 228610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123782941589 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 (123782941889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61891470794 + 61891470795.

It is an arithmetic number, because the mean of its divisors is an integer number (61891470795).

Almost surely, 2^123782941589 is an apocalyptic number.

It is an amenable number.

123782941589 is a deficient number, since it is larger than the sum of its proper divisors (1).

123782941589 is an equidigital number, since it uses as much as digits as its factorization.

123782941589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 59.

The spelling of 123782941589 in words is "one hundred twenty-three billion, seven hundred eighty-two million, nine hundred forty-one thousand, five hundred eighty-nine".