12530351523 has 32 divisors (see below), whose sum is σ = 17684697600. Its totient is φ = 7880253696.

The previous prime is 12530351521. The next prime is 12530351527. The reversal of 12530351523 is 32515303521.

It is not a de Polignac number, because 12530351523 - 2¹ = 12530351521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12530351521) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 670338 + ... + 688776.

It is an arithmetic number, because the mean of its divisors is an integer number (552646800).

Almost surely, 2^12530351523 is an apocalyptic number.

12530351523 is a deficient number, since it is larger than the sum of its proper divisors (5154346077).

12530351523 is a wasteful number, since it uses less digits than its factorization.

12530351523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18651.

The product of its (nonzero) digits is 13500, while the sum is 30.

The spelling of 12530351523 in words is "twelve billion, five hundred thirty million, three hundred fifty-one thousand, five hundred twenty-three".