65630619265 has 4 divisors (see below), whose sum is σ = 78756743124. Its totient is φ = 52504495408.

The previous prime is 65630619239. The next prime is 65630619283. The reversal of 65630619265 is 56291603656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46573092864 + 19057526401 = 215808^2 + 138049^2 .

It is a cyclic number.

It is not a de Polignac number, because 65630619265 - 2¹³ = 65630611073 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6563061922 + ... + 6563061931.

It is an arithmetic number, because the mean of its divisors is an integer number (19689185781).

Almost surely, 2^65630619265 is an apocalyptic number.

It is an amenable number.

65630619265 is a deficient number, since it is larger than the sum of its proper divisors (13126123859).

65630619265 is a wasteful number, since it uses less digits than its factorization.

65630619265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13126123858.

The product of its (nonzero) digits is 1749600, while the sum is 49.

The spelling of 65630619265 in words is "sixty-five billion, six hundred thirty million, six hundred nineteen thousand, two hundred sixty-five".