65757535520 has 96 divisors (see below), whose sum is σ = 156716150976. Its totient is φ = 26072550400.

The previous prime is 65757535447. The next prime is 65757535573. The reversal of 65757535520 is 2553575756.

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 15 ways as a sum of consecutive naturals, for example, 32927162 + ... + 32929158.

It is an arithmetic number, because the mean of its divisors is an integer number (1632459906).

Almost surely, 2^65757535520 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 65757535520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78358075488).

65757535520 is an abundant number, since it is smaller than the sum of its proper divisors (90958615456).

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

65757535520 is a wasteful number, since it uses less digits than its factorization.

65757535520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3714 (or 3706 counting only the distinct ones).

The product of its (nonzero) digits is 5512500, while the sum is 50.

The spelling of 65757535520 in words is "sixty-five billion, seven hundred fifty-seven million, five hundred thirty-five thousand, five hundred twenty".