23000542505 has 4 divisors (see below), whose sum is σ = 27600651012. Its totient is φ = 18400434000.

The previous prime is 23000542489. The next prime is 23000542507. The reversal of 23000542505 is 50524500032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17911004224 + 5089538281 = 133832^2 + 71341^2 .

It is not a de Polignac number, because 23000542505 - 2⁴ = 23000542489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23000542507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2300054246 + ... + 2300054255.

It is an arithmetic number, because the mean of its divisors is an integer number (6900162753).

Almost surely, 2^23000542505 is an apocalyptic number.

It is an amenable number.

23000542505 is a deficient number, since it is larger than the sum of its proper divisors (4600108507).

23000542505 is an equidigital number, since it uses as much as digits as its factorization.

23000542505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4600108506.

The product of its (nonzero) digits is 6000, while the sum is 26.

The spelling of 23000542505 in words is "twenty-three billion, five hundred forty-two thousand, five hundred five".