23523420015 has 12 divisors (see below), whose sum is σ = 40773928104. Its totient is φ = 12545823984.

The previous prime is 23523420001. The next prime is 23523420023. The reversal of 23523420015 is 51002432532.

It is a happy number.

23523420015 is a `hidden beast` number, since 235 + 2 + 3 + 420 + 0 + 1 + 5 = 666.

It is not a de Polignac number, because 23523420015 - 2⁶ = 23523419951 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261371289 + ... + 261371378.

It is an arithmetic number, because the mean of its divisors is an integer number (3397827342).

Almost surely, 2^23523420015 is an apocalyptic number.

23523420015 is a deficient number, since it is larger than the sum of its proper divisors (17250508089).

23523420015 is a wasteful number, since it uses less digits than its factorization.

23523420015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522742678 (or 522742675 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 23523420015 its reverse (51002432532), we get a palindrome (74525852547).

The spelling of 23523420015 in words is "twenty-three billion, five hundred twenty-three million, four hundred twenty thousand, fifteen".