12554691386 has 16 divisors (see below), whose sum is σ = 20180047104. Its totient is φ = 5836906944.

The previous prime is 12554691379. The next prime is 12554691407. The reversal of 12554691386 is 68319645521.

12554691386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2221610 + ... + 2227253.

It is an arithmetic number, because the mean of its divisors is an integer number (1261252944).

Almost surely, 2^12554691386 is an apocalyptic number.

12554691386 is a deficient number, since it is larger than the sum of its proper divisors (7625355718).

12554691386 is a wasteful number, since it uses less digits than its factorization.

12554691386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4448965.

The product of its digits is 1555200, while the sum is 50.

The spelling of 12554691386 in words is "twelve billion, five hundred fifty-four million, six hundred ninety-one thousand, three hundred eighty-six".