23530421145 has 32 divisors (see below), whose sum is σ = 46938608640. Its totient is φ = 9778875840.

The previous prime is 23530421143. The next prime is 23530421177. The reversal of 23530421145 is 54112403532.

It is not a de Polignac number, because 23530421145 - 2¹ = 23530421143 is a prime.

It is a super-2 number, since 2×23530421145² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23530421141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10185175 + ... + 10187484.

It is an arithmetic number, because the mean of its divisors is an integer number (1466831520).

Almost surely, 2^23530421145 is an apocalyptic number.

It is an amenable number.

23530421145 is a deficient number, since it is larger than the sum of its proper divisors (23408187495).

23530421145 is a wasteful number, since it uses less digits than its factorization.

23530421145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20372685.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 23530421145 its reverse (54112403532), we get a palindrome (77642824677).

The spelling of 23530421145 in words is "twenty-three billion, five hundred thirty million, four hundred twenty-one thousand, one hundred forty-five".