18138740083671 has 16 divisors (see below), whose sum is σ = 24524598548736. Its totient is φ = 11923695254976.

The previous prime is 18138740083663. The next prime is 18138740083727. The reversal of 18138740083671 is 17638004783181.

It is not a de Polignac number, because 18138740083671 - 2³ = 18138740083663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18138740083601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125896725 + ... + 126040718.

It is an arithmetic number, because the mean of its divisors is an integer number (1532787409296).

Almost surely, 2^{18138740083671} is an apocalyptic number.

18138740083671 is a deficient number, since it is larger than the sum of its proper divisors (6385858465065).

18138740083671 is a wasteful number, since it uses less digits than its factorization.

18138740083671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251937782.

The product of its (nonzero) digits is 5419008, while the sum is 57.

The spelling of 18138740083671 in words is "eighteen trillion, one hundred thirty-eight billion, seven hundred forty million, eighty-three thousand, six hundred seventy-one".