817126011 has 48 divisors (see below), whose sum is σ = 1333332000. Its totient is φ = 478711296.

The previous prime is 817125997. The next prime is 817126031. The reversal of 817126011 is 110621718.

It is not a de Polignac number, because 817126011 - 2⁹ = 817125499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (817126031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 246040 + ... + 249338.

It is an arithmetic number, because the mean of its divisors is an integer number (27777750).

Almost surely, 2^817126011 is an apocalyptic number.

817126011 is a deficient number, since it is larger than the sum of its proper divisors (516205989).

817126011 is a wasteful number, since it uses less digits than its factorization.

817126011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420 (or 3417 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 27.

The square root of 817126011 is about 28585.4160543449. The cubic root of 817126011 is about 934.8953760177.

Adding to 817126011 its reverse (110621718), we get a palindrome (927747729).

The spelling of 817126011 in words is "eight hundred seventeen million, one hundred twenty-six thousand, eleven".