12023340523534 has 4 divisors (see below), whose sum is σ = 18035010785304. Its totient is φ = 6011670261766.

The previous prime is 12023340523511. The next prime is 12023340523541. The reversal of 12023340523534 is 43532504332021.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 12023340523493 and 12023340523502.

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 as a sum of consecutive naturals, namely, 3005835130882 + ... + 3005835130885.

It is an arithmetic number, because the mean of its divisors is an integer number (4508752696326).

Almost surely, 2^{12023340523534} is an apocalyptic number.

12023340523534 is a deficient number, since it is larger than the sum of its proper divisors (6011670261770).

12023340523534 is an equidigital number, since it uses as much as digits as its factorization.

12023340523534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6011670261769.

The product of its (nonzero) digits is 259200, while the sum is 37.

Adding to 12023340523534 its reverse (43532504332021), we get a palindrome (55555844855555).

The spelling of 12023340523534 in words is "twelve trillion, twenty-three billion, three hundred forty million, five hundred twenty-three thousand, five hundred thirty-four".