23105532005 has 4 divisors (see below), whose sum is σ = 27726638412. Its totient is φ = 18484425600.

The previous prime is 23105531947. The next prime is 23105532061. The reversal of 23105532005 is 50023550132.

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 11371876321 + 11733655684 = 106639^2 + 108322^2 .

It is not a de Polignac number, because 23105532005 - 2¹⁴ = 23105515621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2310553196 + ... + 2310553205.

It is an arithmetic number, because the mean of its divisors is an integer number (6931659603).

Almost surely, 2^23105532005 is an apocalyptic number.

It is an amenable number.

23105532005 is a deficient number, since it is larger than the sum of its proper divisors (4621106407).

23105532005 is an equidigital number, since it uses as much as digits as its factorization.

23105532005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4621106406.

The product of its (nonzero) digits is 4500, while the sum is 26.

The spelling of 23105532005 in words is "twenty-three billion, one hundred five million, five hundred thirty-two thousand, five".