18126559406 has 8 divisors (see below), whose sum is σ = 27517427784. Its totient is φ = 8954083480.

The previous prime is 18126559393. The next prime is 18126559411. The reversal of 18126559406 is 60495562181.

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54597905 + ... + 54598236.

It is an arithmetic number, because the mean of its divisors is an integer number (3439678473).

Almost surely, 2^18126559406 is an apocalyptic number.

18126559406 is a deficient number, since it is larger than the sum of its proper divisors (9390868378).

18126559406 is a wasteful number, since it uses less digits than its factorization.

18126559406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109196226.

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 18126559406 in words is "eighteen billion, one hundred twenty-six million, five hundred fifty-nine thousand, four hundred six".