12387661406 has 8 divisors (see below), whose sum is σ = 18678777984. Its totient is φ = 6161402080.

The previous prime is 12387661387. The next prime is 12387661421. The reversal of 12387661406 is 60416678321.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16213835 + ... + 16214598.

It is an arithmetic number, because the mean of its divisors is an integer number (2334847248).

Almost surely, 2^12387661406 is an apocalyptic number.

12387661406 is a deficient number, since it is larger than the sum of its proper divisors (6291116578).

12387661406 is a wasteful number, since it uses less digits than its factorization.

12387661406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32428626.

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 12387661406 in words is "twelve billion, three hundred eighty-seven million, six hundred sixty-one thousand, four hundred six".