65474051328 has 288 divisors, whose sum is σ = 234297342720. Its totient is φ = 17606246400.

The previous prime is 65474051299. The next prime is 65474051353. The reversal of 65474051328 is 82315047456.

65474051328 is a `hidden beast` number, since 65 + 4 + 74 + 0 + 513 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 782728 + ... + 862328.

It is an arithmetic number, because the mean of its divisors is an integer number (813532440).

Almost surely, 2^65474051328 is an apocalyptic number.

65474051328 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65474051328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117148671360).

65474051328 is an abundant number, since it is smaller than the sum of its proper divisors (168823291392).

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

65474051328 is a wasteful number, since it uses less digits than its factorization.

65474051328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79650 (or 79630 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 45.

The spelling of 65474051328 in words is "sixty-five billion, four hundred seventy-four million, fifty-one thousand, three hundred twenty-eight".