12124654887 has 16 divisors (see below), whose sum is σ = 16305134720. Its totient is φ = 8013801312.

The previous prime is 12124654879. The next prime is 12124654901. The reversal of 12124654887 is 78845642121.

It is a happy number.

It is not a de Polignac number, because 12124654887 - 2³ = 12124654879 is a prime.

It is a super-2 number, since 2×12124654887² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12124654987) 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 15 ways as a sum of consecutive naturals, for example, 285828 + ... + 325494.

It is an arithmetic number, because the mean of its divisors is an integer number (1019070920).

Almost surely, 2^12124654887 is an apocalyptic number.

12124654887 is a deficient number, since it is larger than the sum of its proper divisors (4180479833).

12124654887 is a wasteful number, since it uses less digits than its factorization.

12124654887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40542.

The product of its digits is 860160, while the sum is 48.

The spelling of 12124654887 in words is "twelve billion, one hundred twenty-four million, six hundred fifty-four thousand, eight hundred eighty-seven".