215716631357273 has 4 divisors (see below), whose sum is σ = 215882185181568. Its totient is φ = 215551077532980.

The previous prime is 215716631357261. The next prime is 215716631357287. The reversal of 215716631357273 is 372753136617512.

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 215716631357273 - 2⁴⁰ = 214617119729497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215716631387273) 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 3 ways as a sum of consecutive naturals, for example, 82776910193 + ... + 82776912798.

It is an arithmetic number, because the mean of its divisors is an integer number (53970546295392).

Almost surely, 2^{215716631357273} is an apocalyptic number.

It is an amenable number.

215716631357273 is a deficient number, since it is larger than the sum of its proper divisors (165553824295).

215716631357273 is a wasteful number, since it uses less digits than its factorization.

215716631357273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165553824294.

The product of its digits is 33339600, while the sum is 59.

The spelling of 215716631357273 in words is "two hundred fifteen trillion, seven hundred sixteen billion, six hundred thirty-one million, three hundred fifty-seven thousand, two hundred seventy-three".