69275819209 has 9 divisors (see below), whose sum is σ = 70935940359. Its totient is φ = 67653699120.

The previous prime is 69275819161. The next prime is 69275819233. The reversal of 69275819209 is 90291857296.

The square root of 69275819209 is 263203.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7930436809 + 61345382400 = 89053^2 + 247680^2 .

It is not a de Polignac number, because 69275819209 - 2¹¹ = 69275817161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69275819279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11314669 + ... + 11320789.

It is an arithmetic number, because the mean of its divisors is an integer number (7881771151).

Almost surely, 2^69275819209 is an apocalyptic number.

69275819209 is the 263203-rd square number.

69275819209 is the 131602-nd centered octagonal number.

It is an amenable number.

69275819209 is a deficient number, since it is larger than the sum of its proper divisors (1660121150).

69275819209 is an frugal number, since it uses more digits than its factorization.

69275819209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12328 (or 6164 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 58.

The spelling of 69275819209 in words is "sixty-nine billion, two hundred seventy-five million, eight hundred nineteen thousand, two hundred nine".