123543411999 has 32 divisors (see below), whose sum is σ = 190345199616. Its totient is φ = 69814675200.

The previous prime is 123543411977. The next prime is 123543412001. The reversal of 123543411999 is 999114345321.

It is not a de Polignac number, because 123543411999 - 2⁵ = 123543411967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123543411949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1783714 + ... + 1851680.

It is an arithmetic number, because the mean of its divisors is an integer number (5948287488).

Almost surely, 2^123543411999 is an apocalyptic number.

123543411999 is a deficient number, since it is larger than the sum of its proper divisors (66801787617).

123543411999 is a wasteful number, since it uses less digits than its factorization.

123543411999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68935.

The product of its digits is 1049760, while the sum is 51.

The spelling of 123543411999 in words is "one hundred twenty-three billion, five hundred forty-three million, four hundred eleven thousand, nine hundred ninety-nine".