23193545539 has 2 divisors, whose sum is σ = 23193545540. Its totient is φ = 23193545538.

The previous prime is 23193545533. The next prime is 23193545597. The reversal of 23193545539 is 93554539132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23193545539 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23193545492 and 23193545501.

It is not a weakly prime, because it can be changed into another prime (23193545533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11596772769 + 11596772770.

It is an arithmetic number, because the mean of its divisors is an integer number (11596772770).

Almost surely, 2^23193545539 is an apocalyptic number.

23193545539 is a deficient number, since it is larger than the sum of its proper divisors (1).

23193545539 is an equidigital number, since it uses as much as digits as its factorization.

23193545539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2187000, while the sum is 49.

The spelling of 23193545539 in words is "twenty-three billion, one hundred ninety-three million, five hundred forty-five thousand, five hundred thirty-nine".