12642149527 has 8 divisors (see below), whose sum is σ = 14450913792. Its totient is φ = 10834071000.

The previous prime is 12642149461. The next prime is 12642149543. The reversal of 12642149527 is 72594124621.

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-12642149527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12642149227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131299 + ... + 206212.

It is an arithmetic number, because the mean of its divisors is an integer number (1806364224).

Almost surely, 2^12642149527 is an apocalyptic number.

12642149527 is a deficient number, since it is larger than the sum of its proper divisors (1808764265).

12642149527 is an equidigital number, since it uses as much as digits as its factorization.

12642149527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342869.

The product of its digits is 241920, while the sum is 43.

The spelling of 12642149527 in words is "twelve billion, six hundred forty-two million, one hundred forty-nine thousand, five hundred twenty-seven".