65318665394 has 8 divisors (see below), whose sum is σ = 97979777820. Its totient is φ = 32658739456.

The previous prime is 65318665319. The next prime is 65318665403. The reversal of 65318665394 is 49356681356.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41671914769 + 23646750625 = 204137^2 + 153775^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143099 + ... + 388734.

Almost surely, 2^65318665394 is an apocalyptic number.

65318665394 is a deficient number, since it is larger than the sum of its proper divisors (32661112426).

65318665394 is a wasteful number, since it uses less digits than its factorization.

65318665394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593244.

The product of its digits is 13996800, while the sum is 56.

The spelling of 65318665394 in words is "sixty-five billion, three hundred eighteen million, six hundred sixty-five thousand, three hundred ninety-four".