217146566011013 has 4 divisors (see below), whose sum is σ = 222196486150848. Its totient is φ = 212096645871180.

The previous prime is 217146566010949. The next prime is 217146566011027. The reversal of 217146566011013 is 310110665641712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 217146566011013 - 2⁶ = 217146566010949 is a prime.

It is a super-2 number, since 2×217146566011013² (a number of 29 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 (217146566011033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2524960069853 + ... + 2524960069938.

It is an arithmetic number, because the mean of its divisors is an integer number (55549121537712).

Almost surely, 2^{217146566011013} is an apocalyptic number.

It is an amenable number.

217146566011013 is a deficient number, since it is larger than the sum of its proper divisors (5049920139835).

217146566011013 is an equidigital number, since it uses as much as digits as its factorization.

217146566011013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5049920139834.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 217146566011013 in words is "two hundred seventeen trillion, one hundred forty-six billion, five hundred sixty-six million, eleven thousand, thirteen".