123543607423 has 2 divisors, whose sum is σ = 123543607424. Its totient is φ = 123543607422.

The previous prime is 123543607403. The next prime is 123543607457. The reversal of 123543607423 is 324706345321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123543607423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123543607403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61771803711 + 61771803712.

It is an arithmetic number, because the mean of its divisors is an integer number (61771803712).

Almost surely, 2^123543607423 is an apocalyptic number.

123543607423 is a deficient number, since it is larger than the sum of its proper divisors (1).

123543607423 is an equidigital number, since it uses as much as digits as its factorization.

123543607423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 362880, while the sum is 40.

The spelling of 123543607423 in words is "one hundred twenty-three billion, five hundred forty-three million, six hundred seven thousand, four hundred twenty-three".