23521523530 has 8 divisors (see below), whose sum is σ = 42338742372. Its totient is φ = 9408609408.

The previous prime is 23521523491. The next prime is 23521523533. The reversal of 23521523530 is 3532512532.

It can be written as a sum of positive squares in 2 ways, for example, as 23477287729 + 44235801 = 153223^2 + 6651^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 23521523492 and 23521523501.

It is not an unprimeable number, because it can be changed into a prime (23521523533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176076167 + ... + 1176076186.

Almost surely, 2^23521523530 is an apocalyptic number.

23521523530 is a deficient number, since it is larger than the sum of its proper divisors (18817218842).

23521523530 is a wasteful number, since it uses less digits than its factorization.

23521523530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2352152360.

The product of its (nonzero) digits is 27000, while the sum is 31.

The spelling of 23521523530 in words is "twenty-three billion, five hundred twenty-one million, five hundred twenty-three thousand, five hundred thirty".