23105443515 has 32 divisors (see below), whose sum is σ = 46090861056. Its totient is φ = 9602261760.

The previous prime is 23105443513. The next prime is 23105443519. The reversal of 23105443515 is 51534450132.

It is not a de Polignac number, because 23105443515 - 2¹ = 23105443513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (23105443513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10001202 + ... + 10003511.

It is an arithmetic number, because the mean of its divisors is an integer number (1440339408).

Almost surely, 2^23105443515 is an apocalyptic number.

23105443515 is a deficient number, since it is larger than the sum of its proper divisors (22985417541).

23105443515 is a wasteful number, since it uses less digits than its factorization.

23105443515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20004739.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 23105443515 its reverse (51534450132), we get a palindrome (74639893647).

The spelling of 23105443515 in words is "twenty-three billion, one hundred five million, four hundred forty-three thousand, five hundred fifteen".