16817897742 has 16 divisors (see below), whose sum is σ = 34041047040. Its totient is φ = 5538423992.

The previous prime is 16817897741. The next prime is 16817897771. The reversal of 16817897742 is 24779871861.

16817897742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16817897741) 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, 16884942 + ... + 16885937.

It is an arithmetic number, because the mean of its divisors is an integer number (2127565440).

Almost surely, 2^16817897742 is an apocalyptic number.

16817897742 is an abundant number, since it is smaller than the sum of its proper divisors (17223149298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16817897742 is a wasteful number, since it uses less digits than its factorization.

16817897742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33770967.

The product of its digits is 9483264, while the sum is 60.

The spelling of 16817897742 in words is "sixteen billion, eight hundred seventeen million, eight hundred ninety-seven thousand, seven hundred forty-two".