65128274496 has 168 divisors, whose sum is σ = 190946471040. Its totient is φ = 21214534656.

The previous prime is 65128274489. The next prime is 65128274509. The reversal of 65128274496 is 69447282156.

65128274496 is a `hidden beast` number, since 6 + 5 + 1 + 2 + 82 + 74 + 496 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22387090 + ... + 22389998.

Almost surely, 2^65128274496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65128274496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95473235520).

65128274496 is an abundant number, since it is smaller than the sum of its proper divisors (125818196544).

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

65128274496 is a wasteful number, since it uses less digits than its factorization.

65128274496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3801 (or 3788 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 65128274496 in words is "sixty-five billion, one hundred twenty-eight million, two hundred seventy-four thousand, four hundred ninety-six".