12523607534 has 8 divisors (see below), whose sum is σ = 18788429520. Its totient is φ = 6260797696.

The previous prime is 12523607531. The next prime is 12523607561. The reversal of 12523607534 is 43570632521.

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

It is a super-2 number, since 2×12523607534² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12523607531) 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, 487379 + ... + 512430.

It is an arithmetic number, because the mean of its divisors is an integer number (2348553690).

Almost surely, 2^12523607534 is an apocalyptic number.

12523607534 is a deficient number, since it is larger than the sum of its proper divisors (6264821986).

12523607534 is an equidigital number, since it uses as much as digits as its factorization.

12523607534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006074.

The product of its (nonzero) digits is 151200, while the sum is 38.

The spelling of 12523607534 in words is "twelve billion, five hundred twenty-three million, six hundred seven thousand, five hundred thirty-four".