69141124809 has 9 divisors (see below), whose sum is σ = 99871653063. Its totient is φ = 46093557312.

The previous prime is 69141124807. The next prime is 69141124817. The reversal of 69141124809 is 90842114196.

It is a happy number.

The square root of 69141124809 is 262947.

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., 25091510409 + 44049614400 = 158403^2 + 209880^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 69141124809 - 2¹ = 69141124807 is a prime.

It is a super-3 number, since 3×69141124809³ (a number of 33 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (69141124807) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 745017 + ... + 832665.

Almost surely, 2^69141124809 is an apocalyptic number.

69141124809 is the 262947-th square number.

69141124809 is the 131474-th centered octagonal number.

It is an amenable number.

69141124809 is a deficient number, since it is larger than the sum of its proper divisors (30730528254).

69141124809 is an frugal number, since it uses more digits than its factorization.

69141124809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175304 (or 87652 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 69141124809 in words is "sixty-nine billion, one hundred forty-one million, one hundred twenty-four thousand, eight hundred nine".