217172040713 has 8 divisors (see below), whose sum is σ = 219819096000. Its totient is φ = 214525712368.

The previous prime is 217172040707. The next prime is 217172040779. The reversal of 217172040713 is 317040271712.

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

It is a cyclic number.

It is not a de Polignac number, because 217172040713 - 2¹⁶ = 217171975177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (217172040013) 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, 431948 + ... + 787986.

It is an arithmetic number, because the mean of its divisors is an integer number (27477387000).

Almost surely, 2^217172040713 is an apocalyptic number.

It is an amenable number.

217172040713 is a deficient number, since it is larger than the sum of its proper divisors (2647055287).

217172040713 is an equidigital number, since it uses as much as digits as its factorization.

217172040713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363471.

The product of its (nonzero) digits is 16464, while the sum is 35.

The spelling of 217172040713 in words is "two hundred seventeen billion, one hundred seventy-two million, forty thousand, seven hundred thirteen".