23521530424252 has 36 divisors (see below), whose sum is σ = 48123734257200. Its totient is φ = 10029999317184.

The previous prime is 23521530424229. The next prime is 23521530424277. The reversal of 23521530424252 is 25242403512532.

It is a super-2 number, since 2×23521530424252² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 301488153 + ... + 301566160.

Almost surely, 2^{23521530424252} is an apocalyptic number.

It is an amenable number.

23521530424252 is an abundant number, since it is smaller than the sum of its proper divisors (24602203832948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23521530424252 is a wasteful number, since it uses less digits than its factorization.

23521530424252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603054530 (or 603054521 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 40.

Adding to 23521530424252 its reverse (25242403512532), we get a palindrome (48763933936784).

The spelling of 23521530424252 in words is "twenty-three trillion, five hundred twenty-one billion, five hundred thirty million, four hundred twenty-four thousand, two hundred fifty-two".