201517660206079 has 8 divisors (see below), whose sum is σ = 230306308613280. Its totient is φ = 172729114607616.

The previous prime is 201517660206001. The next prime is 201517660206311. The reversal of 201517660206079 is 970602066715102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201517660206079 - 2⁴⁷ = 60780171850751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201517660206479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21455134 + ... + 29382955.

It is an arithmetic number, because the mean of its divisors is an integer number (28788288576660).

Almost surely, 2^{201517660206079} is an apocalyptic number.

201517660206079 is a deficient number, since it is larger than the sum of its proper divisors (28788648407201).

201517660206079 is an equidigital number, since it uses as much as digits as its factorization.

201517660206079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51404369.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The spelling of 201517660206079 in words is "two hundred one trillion, five hundred seventeen billion, six hundred sixty million, two hundred six thousand, seventy-nine".