65654993328 has 40 divisors (see below), whose sum is σ = 171652221888. Its totient is φ = 21621321792.

The previous prime is 65654993317. The next prime is 65654993329. The reversal of 65654993328 is 82339945656.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (65654993329) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 8235850 + ... + 8243817.

Almost surely, 2^65654993328 is an apocalyptic number.

It is an amenable number.

65654993328 is an abundant number, since it is smaller than the sum of its proper divisors (105997228560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65654993328 is a wasteful number, since it uses less digits than its factorization.

65654993328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16479761 (or 16479755 counting only the distinct ones).

The product of its digits is 41990400, while the sum is 60.

The spelling of 65654993328 in words is "sixty-five billion, six hundred fifty-four million, nine hundred ninety-three thousand, three hundred twenty-eight".