215716631357211 has 16 divisors (see below), whose sum is σ = 298211829500160. Its totient is φ = 138538648670240.

The previous prime is 215716631357113. The next prime is 215716631357221. The reversal of 215716631357211 is 112753136617512.

It is a cyclic number.

It is not a de Polignac number, because 215716631357211 - 2¹⁷ = 215716631226139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215716631357221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2798495895 + ... + 2798572976.

It is an arithmetic number, because the mean of its divisors is an integer number (18638239343760).

Almost surely, 2^{215716631357211} is an apocalyptic number.

215716631357211 is a deficient number, since it is larger than the sum of its proper divisors (82495198142949).

215716631357211 is a wasteful number, since it uses less digits than its factorization.

215716631357211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5597069346.

The product of its digits is 1587600, while the sum is 51.

The spelling of 215716631357211 in words is "two hundred fifteen trillion, seven hundred sixteen billion, six hundred thirty-one million, three hundred fifty-seven thousand, two hundred eleven".