12642686267487 has 32 divisors (see below), whose sum is σ = 17675195535360. Its totient is φ = 8031135272160.

The previous prime is 12642686267473. The next prime is 12642686267489. The reversal of 12642686267487 is 78476268624621.

It is not a de Polignac number, because 12642686267487 - 2⁶ = 12642686267423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12642686267489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5343063 + ... + 7337144.

It is an arithmetic number, because the mean of its divisors is an integer number (552349860480).

Almost surely, 2^{12642686267487} is an apocalyptic number.

12642686267487 is a deficient number, since it is larger than the sum of its proper divisors (5032509267873).

12642686267487 is a wasteful number, since it uses less digits than its factorization.

12642686267487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12680443.

The product of its digits is 520224768, while the sum is 69.

The spelling of 12642686267487 in words is "twelve trillion, six hundred forty-two billion, six hundred eighty-six million, two hundred sixty-seven thousand, four hundred eighty-seven".