18710428420905 has 64 divisors (see below), whose sum is σ = 33133417244928. Its totient is φ = 8957348720640.

The previous prime is 18710428420837. The next prime is 18710428420913. The reversal of 18710428420905 is 50902482401781.

It is not a de Polignac number, because 18710428420905 - 2⁷ = 18710428420777 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 1357044 + ... + 6265973.

It is an arithmetic number, because the mean of its divisors is an integer number (517709644452).

Almost surely, 2^{18710428420905} is an apocalyptic number.

18710428420905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18710428420905 is a deficient number, since it is larger than the sum of its proper divisors (14422988824023).

18710428420905 is a wasteful number, since it uses less digits than its factorization.

18710428420905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7623386.

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 18710428420905 in words is "eighteen trillion, seven hundred ten billion, four hundred twenty-eight million, four hundred twenty thousand, nine hundred five".