9665265385 has 4 divisors (see below), whose sum is σ = 11598318468. Its totient is φ = 7732212304.

The previous prime is 9665265383. The next prime is 9665265403. The reversal of 9665265385 is 5835625669.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5835625669 = 83 ⋅70308743.

It can be written as a sum of positive squares in 2 ways, for example, as 3118999104 + 6546266281 = 55848^2 + 80909^2 .

It is a cyclic number.

It is not a de Polignac number, because 9665265385 - 2¹ = 9665265383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9665265383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 966526534 + ... + 966526543.

It is an arithmetic number, because the mean of its divisors is an integer number (2899579617).

Almost surely, 2^9665265385 is an apocalyptic number.

It is an amenable number.

9665265385 is a deficient number, since it is larger than the sum of its proper divisors (1933053083).

9665265385 is a wasteful number, since it uses less digits than its factorization.

9665265385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933053082.

The product of its digits is 11664000, while the sum is 55.

The square root of 9665265385 is about 98312.0815820721. The cubic root of 9665265385 is about 2130.1225718733.

The spelling of 9665265385 in words is "nine billion, six hundred sixty-five million, two hundred sixty-five thousand, three hundred eighty-five".