65539193472 has 128 divisors (see below), whose sum is σ = 196156771200. Its totient is φ = 21538621440.

The previous prime is 65539193443. The next prime is 65539193507. The reversal of 65539193472 is 27439193556.

65539193472 is a `hidden beast` number, since 6 + 5 + 539 + 1 + 9 + 34 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111828 + ... + 378924.

It is an arithmetic number, because the mean of its divisors is an integer number (1532474775).

Almost surely, 2^65539193472 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 65539193472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98078385600).

65539193472 is an abundant number, since it is smaller than the sum of its proper divisors (130617577728).

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

65539193472 is a wasteful number, since it uses less digits than its factorization.

65539193472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267191 (or 267173 counting only the distinct ones).

The product of its digits is 6123600, while the sum is 54.

The spelling of 65539193472 in words is "sixty-five billion, five hundred thirty-nine million, one hundred ninety-three thousand, four hundred seventy-two".