213330878617 has 8 divisors (see below), whose sum is σ = 216536705352. Its totient is φ = 210146496000.

The previous prime is 213330878611. The next prime is 213330878627. The reversal of 213330878617 is 716878033312.

It can be written as a sum of positive squares in 4 ways, for example, as 197048097801 + 16282780816 = 443901^2 + 127604^2 .

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 213330878617 - 2²³ = 213322490009 is a prime.

It is a super-3 number, since 3×213330878617³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213330878611) 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 7 ways as a sum of consecutive naturals, for example, 5340984 + ... + 5380777.

It is an arithmetic number, because the mean of its divisors is an integer number (27067088169).

Almost surely, 2^213330878617 is an apocalyptic number.

It is an amenable number.

213330878617 is a deficient number, since it is larger than the sum of its proper divisors (3205826735).

213330878617 is a wasteful number, since it uses less digits than its factorization.

213330878617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10722059.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 213330878617 in words is "two hundred thirteen billion, three hundred thirty million, eight hundred seventy-eight thousand, six hundred seventeen".