826216911 has 24 divisors (see below), whose sum is σ = 1286210016. Its totient is φ = 508052160.

The previous prime is 826216907. The next prime is 826216927. The reversal of 826216911 is 119612628.

It is not a de Polignac number, because 826216911 - 2² = 826216907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (826216211) 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 23 ways as a sum of consecutive naturals, for example, 257326 + ... + 260516.

It is an arithmetic number, because the mean of its divisors is an integer number (53592084).

Almost surely, 2^826216911 is an apocalyptic number.

826216911 is a deficient number, since it is larger than the sum of its proper divisors (459993105).

826216911 is a wasteful number, since it uses less digits than its factorization.

826216911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5423 (or 5420 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 826216911 is about 28743.9891281638. The cubic root of 826216911 is about 938.3496434005.

The spelling of 826216911 in words is "eight hundred twenty-six million, two hundred sixteen thousand, nine hundred eleven".