23123198543 has 2 divisors, whose sum is σ = 23123198544. Its totient is φ = 23123198542.

The previous prime is 23123198473. The next prime is 23123198587. The reversal of 23123198543 is 34589132132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23123198543 - 2¹⁰ = 23123197519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23123198543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23123198243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11561599271 + 11561599272.

It is an arithmetic number, because the mean of its divisors is an integer number (11561599272).

Almost surely, 2^23123198543 is an apocalyptic number.

23123198543 is a deficient number, since it is larger than the sum of its proper divisors (1).

23123198543 is an equidigital number, since it uses as much as digits as its factorization.

23123198543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The spelling of 23123198543 in words is "twenty-three billion, one hundred twenty-three million, one hundred ninety-eight thousand, five hundred forty-three".