17957322004997 has 4 divisors (see below), whose sum is σ = 17958901515180. Its totient is φ = 17955742494816.

The previous prime is 17957322004987. The next prime is 17957322005003. The reversal of 17957322004997 is 79940022375971.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5724123240196 + 12233198764801 = 2392514^2 + 3497599^2 .

It is a cyclic number.

It is not a de Polignac number, because 17957322004997 - 2¹² = 17957322000901 is a prime.

It is a super-2 number, since 2×17957322004997² (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 (17957322004967) 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 3 ways as a sum of consecutive naturals, for example, 789738038 + ... + 789760775.

It is an arithmetic number, because the mean of its divisors is an integer number (4489725378795).

Almost surely, 2^{17957322004997} is an apocalyptic number.

It is an amenable number.

17957322004997 is a deficient number, since it is larger than the sum of its proper divisors (1579510183).

17957322004997 is a wasteful number, since it uses less digits than its factorization.

17957322004997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1579510182.

The product of its (nonzero) digits is 60011280, while the sum is 65.

The spelling of 17957322004997 in words is "seventeen trillion, nine hundred fifty-seven billion, three hundred twenty-two million, four thousand, nine hundred ninety-seven".