12687464558 has 4 divisors (see below), whose sum is σ = 19031196840. Its totient is φ = 6343732278.

The previous prime is 12687464551. The next prime is 12687464563. The reversal of 12687464558 is 85546478621.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12687464558² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12687464551) 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 as a sum of consecutive naturals, namely, 3171866138 + ... + 3171866141.

It is an arithmetic number, because the mean of its divisors is an integer number (4757799210).

Almost surely, 2^12687464558 is an apocalyptic number.

12687464558 is a deficient number, since it is larger than the sum of its proper divisors (6343732282).

12687464558 is an equidigital number, since it uses as much as digits as its factorization.

12687464558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343732281.

The product of its digits is 12902400, while the sum is 56.

The spelling of 12687464558 in words is "twelve billion, six hundred eighty-seven million, four hundred sixty-four thousand, five hundred fifty-eight".