18377840017 has 8 divisors (see below), whose sum is σ = 18513050624. Its totient is φ = 18243042048.

The previous prime is 18377839999. The next prime is 18377840057. The reversal of 18377840017 is 71004877381.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18377840017 - 2¹⁹ = 18377315729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18377840057) by changing a digit.

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, 13473 + ... + 192190.

It is an arithmetic number, because the mean of its divisors is an integer number (2314131328).

Almost surely, 2^18377840017 is an apocalyptic number.

It is an amenable number.

18377840017 is a deficient number, since it is larger than the sum of its proper divisors (135210607).

18377840017 is a wasteful number, since it uses less digits than its factorization.

18377840017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206319.

The product of its (nonzero) digits is 263424, while the sum is 46.

The spelling of 18377840017 in words is "eighteen billion, three hundred seventy-seven million, eight hundred forty thousand, seventeen".