17742112905 has 32 divisors (see below), whose sum is σ = 31805036928. Its totient is φ = 8369740800.

The previous prime is 17742112903. The next prime is 17742112909. The reversal of 17742112905 is 50921124771.

It is not a de Polignac number, because 17742112905 - 2¹ = 17742112903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (17742112903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1446976 + ... + 1459185.

It is an arithmetic number, because the mean of its divisors is an integer number (993907404).

Almost surely, 2^17742112905 is an apocalyptic number.

17742112905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

17742112905 is a deficient number, since it is larger than the sum of its proper divisors (14062924023).

17742112905 is a wasteful number, since it uses less digits than its factorization.

17742112905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906217.

The product of its (nonzero) digits is 35280, while the sum is 39.

The spelling of 17742112905 in words is "seventeen billion, seven hundred forty-two million, one hundred twelve thousand, nine hundred five".