69841664009 has 8 divisors (see below), whose sum is σ = 79638458760. Its totient is φ = 60676920576.

The previous prime is 69841663981. The next prime is 69841664041. The reversal of 69841664009 is 90046614896.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10596643600 + 59245020409 = 102940^2 + 243403^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69841664009 - 2¹⁶ = 69841598473 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (69841664059) 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 7 ways as a sum of consecutive naturals, for example, 158012594 + ... + 158013035.

It is an arithmetic number, because the mean of its divisors is an integer number (9954807345).

Almost surely, 2^69841664009 is an apocalyptic number.

It is an amenable number.

69841664009 is a deficient number, since it is larger than the sum of its proper divisors (9796794751).

69841664009 is a wasteful number, since it uses less digits than its factorization.

69841664009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316025659.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 69841664009 in words is "sixty-nine billion, eight hundred forty-one million, six hundred sixty-four thousand, nine".