827826232069 has 4 divisors (see below), whose sum is σ = 848017115820. Its totient is φ = 807635348320.

The previous prime is 827826232063. The next prime is 827826232081. The reversal of 827826232069 is 960232628728.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 498241163044 + 329585069025 = 705862^2 + 574095^2 .

It is a cyclic number.

It is not a de Polignac number, because 827826232069 - 2³⁷ = 690387278597 is a prime.

It is a super-2 number, since 2×827826232069² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (827826232063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10095441814 + ... + 10095441895.

It is an arithmetic number, because the mean of its divisors is an integer number (212004278955).

Almost surely, 2^827826232069 is an apocalyptic number.

It is an amenable number.

827826232069 is a deficient number, since it is larger than the sum of its proper divisors (20190883751).

827826232069 is a wasteful number, since it uses less digits than its factorization.

827826232069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20190883750.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 827826232069 in words is "eight hundred twenty-seven billion, eight hundred twenty-six million, two hundred thirty-two thousand, sixty-nine".