69664112329009 has 27 divisors (see below), whose sum is σ = 76904676703897. Its totient is φ = 63057830165000.

The previous prime is 69664112328989. The next prime is 69664112329033. The reversal of 69664112329009 is 90092321146696.

It is a happy number.

The square root of 69664112329009 is 8346503.

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

It is not a de Polignac number, because 69664112329009 - 2¹⁷ = 69664112197937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69664112329109) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 23044693272 + ... + 23044696294.

Almost surely, 2^{69664112329009} is an apocalyptic number.

69664112329009 is the 8346503-rd square number.

69664112329009 is the 4173252-nd centered octagonal number.

It is an amenable number.

69664112329009 is a deficient number, since it is larger than the sum of its proper divisors (7240564374888).

69664112329009 is an frugal number, since it uses more digits than its factorization.

69664112329009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6570 (or 3285 counting only the distinct ones).

The product of its (nonzero) digits is 7558272, while the sum is 58.

The spelling of 69664112329009 in words is "sixty-nine trillion, six hundred sixty-four billion, one hundred twelve million, three hundred twenty-nine thousand, nine".