65703241728 has 72 divisors (see below), whose sum is σ = 189763078050. Its totient is φ = 21901074432.

The previous prime is 65703241727. The next prime is 65703241729. The reversal of 65703241728 is 82714230756.

65703241728 is a `hidden beast` number, since 6 + 570 + 3 + 2 + 4 + 1 + 72 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (65703241727) and next prime (65703241729).

It can be written as a sum of positive squares in only one way, i.e., 45707019264 + 19996222464 = 213792^2 + 141408^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (65703241727) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1763883 + ... + 1800746.

Almost surely, 2^65703241728 is an apocalyptic number.

It is an amenable number.

65703241728 is an abundant number, since it is smaller than the sum of its proper divisors (124059836322).

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

65703241728 is a wasteful number, since it uses less digits than its factorization.

65703241728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3564657 (or 3564634 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 65703241728 in words is "sixty-five billion, seven hundred three million, two hundred forty-one thousand, seven hundred twenty-eight".