12531353653 has 16 divisors (see below), whose sum is σ = 15492391936. Its totient is φ = 9870439680.

The previous prime is 12531353629. The next prime is 12531353663. The reversal of 12531353653 is 35635313521.

It is a cyclic number.

It is not a de Polignac number, because 12531353653 - 2¹⁷ = 12531222581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12531353663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288468 + ... + 329053.

It is an arithmetic number, because the mean of its divisors is an integer number (968274496).

Almost surely, 2^12531353653 is an apocalyptic number.

12531353653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12531353653 is a deficient number, since it is larger than the sum of its proper divisors (2961038283).

12531353653 is a wasteful number, since it uses less digits than its factorization.

12531353653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617764.

The product of its digits is 121500, while the sum is 37.

The spelling of 12531353653 in words is "twelve billion, five hundred thirty-one million, three hundred fifty-three thousand, six hundred fifty-three".