17139974338728 has 96 divisors (see below), whose sum is σ = 46792323302400. Its totient is φ = 5667606008064.

The previous prime is 17139974338709. The next prime is 17139974338757. The reversal of 17139974338728 is 82783347993171.

17139974338728 is a `hidden beast` number, since 1 + 7 + 1 + 3 + 9 + 97 + 433 + 87 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 73117275 + ... + 73351317.

It is an arithmetic number, because the mean of its divisors is an integer number (487420034400).

Almost surely, 2^{17139974338728} is an apocalyptic number.

17139974338728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17139974338728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23396161651200).

17139974338728 is an abundant number, since it is smaller than the sum of its proper divisors (29652348963672).

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

17139974338728 is a wasteful number, since it uses less digits than its factorization.

17139974338728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242191 (or 242184 counting only the distinct ones).

The product of its digits is 384072192, while the sum is 72.

The spelling of 17139974338728 in words is "seventeen trillion, one hundred thirty-nine billion, nine hundred seventy-four million, three hundred thirty-eight thousand, seven hundred twenty-eight".