65023470009 has 45 divisors (see below), whose sum is σ = 100701838237. Its totient is φ = 41811348096.

The previous prime is 65023469989. The next prime is 65023470019. The reversal of 65023470009 is 90007432056.

The square root of 65023470009 is 254997.

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

It can be written as a sum of positive squares in 4 ways, for example, as 17946621225 + 47076848784 = 133965^2 + 216972^2 .

It is not a de Polignac number, because 65023470009 - 2¹⁹ = 65022945721 is a prime.

It is a super-2 number, since 2×65023470009² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65023470019) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 66553729 + ... + 66554705.

Almost surely, 2^65023470009 is an apocalyptic number.

65023470009 is the 254997-th square number.

65023470009 is the 127499-th centered octagonal number.

It is an amenable number.

65023470009 is a deficient number, since it is larger than the sum of its proper divisors (35678368228).

65023470009 is an frugal number, since it uses more digits than its factorization.

65023470009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024 (or 1009 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

Multiplying 65023470009 by its sum of digits (36), we get a square (2340844920324 = 1529982²).

The spelling of 65023470009 in words is "sixty-five billion, twenty-three million, four hundred seventy thousand, nine".