18845815942127 has 8 divisors (see below), whose sum is σ = 18950205932112. Its totient is φ = 18741428913600.

The previous prime is 18845815942111. The next prime is 18845815942169. The reversal of 18845815942127 is 72124951854881.

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 18845815942127 - 2⁴ = 18845815942111 is a prime.

It is a super-2 number, since 2×18845815942127² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18845815942427) 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 7 ways as a sum of consecutive naturals, for example, 12695627 + ... + 14102147.

It is an arithmetic number, because the mean of its divisors is an integer number (2368775741514).

Almost surely, 2^{18845815942127} is an apocalyptic number.

18845815942127 is a deficient number, since it is larger than the sum of its proper divisors (104389989985).

18845815942127 is a wasteful number, since it uses less digits than its factorization.

18845815942127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480729.

The product of its digits is 51609600, while the sum is 65.

The spelling of 18845815942127 in words is "eighteen trillion, eight hundred forty-five billion, eight hundred fifteen million, nine hundred forty-two thousand, one hundred twenty-seven".