12535244253521 has 8 divisors (see below), whose sum is σ = 13965765358464. Its totient is φ = 11153215389520.

The previous prime is 12535244253487. The next prime is 12535244253529.

12535244253521 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12535244253521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12535244253529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12123059690 + ... + 12123060723.

It is an arithmetic number, because the mean of its divisors is an integer number (1745720669808).

Almost surely, 2^{12535244253521} is an apocalyptic number.

12535244253521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12535244253521 is a deficient number, since it is larger than the sum of its proper divisors (1430521104943).

12535244253521 is a wasteful number, since it uses less digits than its factorization.

12535244253521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24246120471.

The product of its digits is 1440000, while the sum is 44.

The spelling of 12535244253521 in words is "twelve trillion, five hundred thirty-five billion, two hundred forty-four million, two hundred fifty-three thousand, five hundred twenty-one".