217133359379 has 4 divisors (see below), whose sum is σ = 217367088360. Its totient is φ = 216899630400.

The previous prime is 217133359321. The next prime is 217133359411. The reversal of 217133359379 is 973953331712.

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

It is a cyclic number.

It is not a de Polignac number, because 217133359379 - 2⁸ = 217133359123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 217133359379.

It is not an unprimeable number, because it can be changed into a prime (217133359309) 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, 116863097 + ... + 116864954.

It is an arithmetic number, because the mean of its divisors is an integer number (54341772090).

Almost surely, 2^217133359379 is an apocalyptic number.

217133359379 is a deficient number, since it is larger than the sum of its proper divisors (233728981).

217133359379 is an equidigital number, since it uses as much as digits as its factorization.

217133359379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233728980.

The product of its digits is 3214890, while the sum is 53.

The spelling of 217133359379 in words is "two hundred seventeen billion, one hundred thirty-three million, three hundred fifty-nine thousand, three hundred seventy-nine".