12543030661 has 8 divisors (see below), whose sum is σ = 15178121280. Its totient is φ = 10118747328.

The previous prime is 12543030659. The next prime is 12543030697. The reversal of 12543030661 is 16603034521.

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

It is a cyclic number.

It is not a de Polignac number, because 12543030661 - 2¹ = 12543030659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12543030161) 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, 52701691 + ... + 52701928.

It is an arithmetic number, because the mean of its divisors is an integer number (1897265160).

Almost surely, 2^12543030661 is an apocalyptic number.

It is an amenable number.

12543030661 is a deficient number, since it is larger than the sum of its proper divisors (2635090619).

12543030661 is a wasteful number, since it uses less digits than its factorization.

12543030661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105403643.

The product of its (nonzero) digits is 12960, while the sum is 31.

The spelling of 12543030661 in words is "twelve billion, five hundred forty-three million, thirty thousand, six hundred sixty-one".